-C1225 RF Excessive Wheel Speed Variation

-U1064 Loss of Communications with BCM

-U1096 Loss of Communications with IPC

-B2284 Battery #2 Fault

-B2285 Battery #2 Fault

-P1380 EB (T) CM DTC Detected- Rough Road Data Unusable

-P0300 Engine Misfire Detected

what do they mean and how do i fix it?

i just put in a ms4 cam and will be getting it tuned Monday..

thanks for your help

William

 

It means quit driving the damn thing until you get it tuned!!

I think Tom will be able to take car of those when he tunes it.

 

It seems your P0300, P1380 and the C1225 are linked.

P1380 is set if the ABS system doesn't send rough road info to the PCM when an engine misfire is detected.

I would suspect that you did something to the wiring in the front of the engine when you installed the cam. The wheel speed sensor that sets that code is the left front sensor not the right front. I have posted the 3 diagnostic procedures for those codes below.

Here is the P1380 diagnostic info:
DTC P1380
Circuit Description
The powertrain control module (PCM) detects engine misfire by detecting variations in crankshaft deceleration between firing strokes. For accurate detection of engine misfire the PCM must distinguish between crankshaft deceleration caused by actual misfire and deceleration caused by rough road conditions. The antilock brake system (ABS) can detect if the vehicle is on a rough road based on wheel acceleration/deceleration data supplied by the wheel speed sensors. If the ABS detects rough road above a predetermined threshold, this information is sent to the PCM via serial data. The PCM can then take the rough road into account when calculating misfire. Even if the ABS is malfunctioning and cannot detect rough roads, the misfire diagnostic test will continue to run. However, if a misfire DTC sets, this additional DTC also sets indicating that rough road data was not available during the misfire calculation due to an ABS malfunction.

Conditions for Running the DTC
DTCs P0101, P0102, P0103, P0335, P0336, P0742, P1120, P1121, P1220, and P1221 are not set.
The vehicle speed is above 16 km/h (10 mph).
The engine load is less than 60 percent.
An engine misfire is detected (DTC P0300 set).
The engine speed is less than 3200 RPM.
Conditions for Setting the DTC
An ABS system malfunction exists preventing the PCM from receiving rough road detection data.

Action Taken When the DTC Sets
The control module stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records.
The driver information center, if equipped, may display a message.
Conditions for Clearing the DTC
A current DTC Last Test Failed clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
Clear the DTC with a scan tool.
Diagnostic Aids

Important
Remove any debris from the powertrain control module/throttle actuator control module (PCM/TAC) connector surfaces before servicing the PCM/TAC module. Inspect the PCM/TAC module connector gaskets when diagnosing or replacing the modules. Verify that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM/TAC modules.
For any test that requires probing the PCM or probing a component harness connector, use the connector test adapter kit J 35616-A . Using this kit prevents damage to the harness or component terminals. Refer to Using Connector Test Adapters in Wiring Systems.

For an intermittent condition, refer to Intermittent Conditions .

Test Description
The number below refers to the step number on the diagnostic table.

1. Service the ABS before diagnosing for a misfire, because an actual engine misfire may or may not exist. The following 2 examples illustrate how this DTC can be set with or without an actual engine misfire:

-There was an actual engine misfire during an ABS malfunction.
-The vehicle operator drove on a rough road, the ABS may not detect this due to a malfunction, and the PCM interpreted the variations in crankshaft speed caused by the rough road as a misfire.

P0300 Diagnostic Info:
DTC P0300

System Description
The powertrain control module (PCM) uses information from the crankshaft position (CKP) sensors and from the camshaft position (CMP) sensor in order to determine if engine misfire is occurring. By monitoring the variations in the crankshaft rotational speed for each cylinder, the PCM is able to detect individual cylinder misfire events. A misfire rate that is high enough can cause damage to the three-way catalytic converter (TWC). The malfunction indicator lamp (MIL) will flash if converter damage conditions are present.

Conditions for Running the DTC
• DTCs P0101, P0102, P0103, P0116, P0117, P0118, P0125, P0335, P0336, P0341, P0342, P0343, P0500, P0502, P0503, P1120, P1220, P1221, or P1258 are not set.
• The engine speed is between 425-3000 RPM.
• The ignition voltage is between 10-18 volts.
• The engine coolant temperature (ECT) is between -7°C-130°C (+19°F-266°F).
• The fuel level is more than 10 percent.
• The throttle angle is steady within 1 percent.
• The anti-lock break system (ABS) and the traction control are not active.
• The transmission is not changing gears.
• The secondary air injection (AIR) diagnostic test is not in progress.
• The A/C clutch is in a steady state.
• The engine is not in fuel shut-off or in decel fuel cut-off.
• The antilock brake system (ABS) signals are not exceeding the rough road thresholds.

Conditions for Setting the DTC
• The PCM determines that an emission type misfire is present.
• The PCM determines that a catalyst-damaging misfire is present.

Action Taken When the DTC Sets
• The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
• The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC
• The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
• A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
• A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
• Clear the MIL and the DTC with a scan tool.

Diagnostic Aids
Important
• Before you service the PCM and the throttle actuator control (TAC), remove any debris from the module connector surfaces. Inspect the module connector gaskets when you diagnose or replace the modules. Ensure that the gaskets are correctly installed. The gaskets prevent contaminate intrusion into the modules.
• For any test that requires probing the PCM or probing a component harness connector, use the J 35616-A connector test adapter kit . Using this kit prevents damage to the harness and component terminals. Refer to Using Connector Test Adapters in Wiring Systems.
• Running the vehicle out of fuel causes sufficient misfire to set DTC P0300. A vehicle that is out of fuel may have DTC P0461 and DTC P1431 also set.
• A restricted fuel filter can cause sufficient misfire to set DTC P0300. Refer to Fuel System Diagnosis .
• A misfire that only occurs during certain conditions may be difficult to locate. Observe the Freeze Frame and the Failure Records in order to determine when the DTC set.
• Excessive vibration from sources other than the engine could cause a misfire DTC. Possible sources of vibration are listed below:
o Variable thickness in the brake rotor
o An unbalanced propeller shaft
o Certain rough road conditions
• If more than 1 cylinder is misfiring, the scan tool may only display 1 misfiring cylinder. This condition is not apparent until the repair is completed. Also, if an ignition coil or module ground circuit is open for 1 side of the engine, the scan tool may only display 2 or 3 misfiring cylinders. Inspect the ground circuit for the ignition coil and for the modules on the cylinder bank of the engine that has more than one misfiring cylinder.
• A misfire may not be apparent at idle. The misfire may only occur above idle during a load. Road-test the vehicle, and monitor the misfire current counters.
• For an intermittent condition, refer to Intermittent Conditions .

Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step 2. The Misfire Current Counters will not increment if certain DTCs set at the same time or after DTC P0300 sets.
If more than 1 cylinder is misfiring, the Misfire Current Counters may increment for only one cylinder. For example, cylinder 1 and cylinder 8 are both misfiring, but only cylinder 8 increments on the Misfire Current Counter.
If one of the injector fuses is open, only 2 or 3 Misfire Current Counters may increment for the corresponding side of the engine.
Wetting down the secondary ignition system with water from a spray bottle may help to locate damaged or deteriorated components. When you apply the water, look and listen for arcing or for misfiring.
If the Misfire Current Counters are incrementing and there is no apparent misfire, an erratic crankshaft position (CKP) sensor signal could be the cause. Perform the diagnostic that are listed on the table for DTC P0335 first if you suspect this condition.
If a misfire is present and you suspect a fuel control concern, force the fuel system into Open Loop using the scan tool, and allow the engine to run for a few minutes. If this procedure eliminates the misfire, refer to any fuel control-related DTCs which are set. If no other DTCs are set, refer to the Engine Scan Tool Data List.
Step 4. The cylinder with the more significant misfire may cause another cylinder's counter to increment by a small amount.
Step 10. If the engine misfire moves with the spark plug, this is good indication that you should replace the spark plug.
Step 12. An engine mechanical condition can cause a spark plug to gas foul. Inspect for loose rockers, for collapsed lifters, or for worn camshaft lobes.
Step 17. If the MIL is flashing, this indicates that a Catalyst Misfire has occurred. Drive the vehicle in the conditions to run the catalyst diagnostic.

DTC P0300 - Engine Misfire Detected
Step
Action Values Yes No
Step 1 Did you perform Diagnostic System Check-Engine Controls? -- Go to Step 2
Go to Diagnostic System Check - Engine Controls

Step 2
Important
If any DTCs other than P0135 and P0155 are set, refer to those DTCs before proceeding with this diagnostic.
1. Install the scan tool.
2. Start the engine.
3. Use a scan tool in order to monitor all the Misfire Current Counters on the Misfire Data List. There are a total of 8 counters, with 1 counter per cylinder.
Are any of the Misfire Current Counters incrementing? -- Go to Step 4
Go to Step 3

Step 3 1. Turn ON the ignition, leaving the engine OFF.
2. Review the Freeze Frame and the Failure Records data for this DTC, and observe the parameters.
3. Turn OFF the ignition for 15 seconds.
4. Start the engine.
5. Operate the vehicle within the conditions required for this diagnostic to run, and as close as possible to the conditions that the Freeze Frame and Failure Records recorded. Special operating conditions that you need to meet before the PCM will run this diagnostic, where applicable, are listed in Conditions for Running the DTC.
6. Select the DTC option and the Specific DTC option, and then enter the DTC number using the scan tool.
Does the scan tool indicate that this diagnostic failed this ignition? -- Go to Step 4
Go to Diagnostic Aids
Step 4
Is only one Misfire counter incrementing? -- Go to Step 6
Go to Step 5

Step 5 Inspect for the following conditions:
• Inspect the accessory drive belt and the pulleys for damage or for misalignment. Refer to Drive Belt Vibration Diagnosis in Engine Mechanical.
• Inspect the vacuum hoses for splits, for kinks, and for proper connections.
• Inspect the throttle body and the intake manifold for vacuum leaks.
• Inspect the crankcase ventilation valve and system for vacuum leaks.
• Inspect the PCM grounds for being clean and secure. Refer to Testing for Intermittent and Poor Connections in Wiring Systems .
• Verify that all injector harness connectors are connected to the proper injector or cylinder.
• Inspect the injector and the ignition control fuses for an open. If you find an open fuse, locate and repair the shorted circuit. Refer to Wiring Repairs in Wiring Systems.
• Test for low fuel pressure or for restricted fuel flow. Refer to Fuel System Diagnosis .
• Inspect for a restricted exhaust. Refer to Restricted Exhaust in Engine Exhaust.
• Inspect the fuel for poor fuel quality. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
Did any of the above inspections isolate a condition requiring a repair? -- Go to Step 17
Go to Step 6

Step 6 1. Turn OFF the ignition.
2. Disconnect the injector that corresponds to the Misfire Current Counters that was incrementing.
3. Connect the injector test lamp J 34730-2C to the injector electrical connector.
4. Start the engine.
Is the injector test lamp flashing? -- Go to Step 7
Go to DTC P0200

Step 7 1. Turn OFF the ignition.
2. Reconnect the injector harness electrical connector.
3. Disconnect the ignition wires from the spark plug that corresponds to the Misfire Current Counters that was incrementing.
4. Install spark tester J 26792 to a ground.
5. Start the engine.
Does the spark jump the tester gap, and is the spark consistent? -- Go to Step 9
Go to Step 8

Step 8 1. Remove the ignition wire for the cylinder that is misfiring.
2. Use a DMM in order to measure the resistance of the ignition wire.
Is the ignition wire resistance less than the specified resistance? 700 ohms Go to Electronic Ignition (EI) System Diagnosis
Go to Step 16

Step 9 1. Remove the spark plugs from the cylinder that indicated a misfire.
2. Inspect the spark plugs. Refer to Spark Plug Replacement .
Does the spark plug appear OK? -- Go to Step 10
Go to Step 11

Step 10
Important
If the Injector Coil Test Procedure does not isolate the condition, refer to Base Engine Misfire without Internal Engine Noises in Engine Mechanical.
1. Swap the suspected spark plug with another cylinder that is operating properly.
2. Operate the vehicle under the same conditions in which the misfire occurred.
Did the misfire move with the spark plug? -- Go to Step 15
Go to Fuel Injector Coil Test

Step 11 Are the spark plugs oil or coolant fouled? -- Go to Base Engine Misfire without Internal Engine Noises in Engine Mechanical Go to Step 12

Step 12
Important
If the Fuel System Diagnosis does not isolate the condition, refer to Base Engine Misfire without Internal Engine Noises in Engine Mechanical.
Are the spark plugs gas fouled? -- Go to Fuel System Diagnosis
Go to Step 13

Step 13 Important
If the Injector Coil Test Procedure does not isolate the condition, refer to Base Engine Misfire without Internal Engine Noises in Engine Mechanical.
Do the spark plugs show any signs of being cracked, worn, or improperly gapped? -- Go to Step 14
Go to Fuel Injector Coil Test

Step 14 Replace or re-gap spark plugs. If you find an improper gap, use a wire-type gauge in order to re-gap spark plugs. Refer to Spark Plug Replacement .
Did you complete the replacement? -- Go to Step 17
--
Step 15 Replace the faulty spark plugs. Refer to Spark Plug Replacement .
Did you complete the replacement? -- Go to Step 17
--
Step 16 Replace the faulty ignition wires. Refer to Spark Plug Wire Replacement .
Did you complete the replacement? -- Go to Step 17
--
Step 17
Was the MIL flashing? -- Go to DTC P0420 or P0430
Go to Step 18

Step 18 1. Use a scan tool in order to clear the DTCs.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC run and pass? -- Go to Step 19
Go to Step 2

Step 19 With a scan tool, observe the stored information, Capture Info.
Does the scan tool display any DTCs that you have not diagnosed? -- Go to Diagnostic Trouble Code (DTC) List
System OK

C1225 Diagnostic Info:
DTC C1221-C1235
C1225 is for the Left Front Sensor and not the Right Front Sensor
Circuit Description
As the wheel spins, the wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.

Conditions for Running the DTC
C1221 through C1228
• DTCs C1232 through C1235 are not set.
• The brake pedal is not pressed.
• The ABS is not active.

Conditions for Setting the DTC
C1225 through C1228
The EBCM detects a rapid variation in the wheel speed. The wheel speed changes by 16 km/h (10 mph) or more in 0.01 second. The change must occur 3 times with no more than 0.2 seconds between occurrences.

Action Taken When the DTC Sets
If equipped, the following actions occur:
• The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
• The DRP does not function optimally.
• The ABS indicator turns ON.
• The Traction Control and Active Handling indicator turns ON.
• The DIC displays the following messages:
o Service ABS
o Service Traction System
o Service Active Handling

Conditions for Clearing the DTC
• The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
• The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids
C1225 through C1228
A possible cause of this DTC is electrical noise on the wheel speed sensor harness wiring. Electrical noise could result from the wheel speed sensor wires being routed to close to high energy ignition system components, such as spark plug wires.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step 3. Measure the resistance of the wheel speed sensor in order to determine if the sensor has a valid resistance value.
Step 4. Ensures that the wheel speed sensor is generating a valid AC voltage output.
Step Action Values Yes No
Schematic Reference: ABS Schematics
Connector End View Reference: ABS Connector End Views

Step 1 Did you perform the ABS Diagnostic System Check? -- Go to Step 2
Go to Diagnostic System Check - ABS

Step 2 1. Install a scan tool.
2. Turn ON the ignition.
3. Set up the scan tool snap shot feature to trigger for this DTC.
4. Drive the vehicle at a speed greater than the specified value.
Does the scan tool indicate that this wheel speed DTC set? 8 km/h (5 mph) Go to Step 3
Go to Diagnostic Aids
Step 3
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Disconnect the wheel speed sensor connector.
3. Measure the resistance across the wheel speed sensor.
Does the resistance measure within the specified range? 850-1350 ohms Go to Step 4
Go to Step 8

Step 4
1. Spin the wheel.
2. Measure the AC voltage across the wheel speed sensor.
Does the AC voltage measure greater than the specified value? 100 mV Go to Step 5
Go to Step 8

Step 5 Inspect for poor connections at the harness connector of the wheel speed sensor. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition? -- Go to Step 10
Go to Step 6

Step 6 1. Disconnect the EBCM harness connector.
2. Install the J 39700 universal pinout box using the J 39700-300 cable adapter to the EBCM harness connector only.
3. Test the wheel speed sensor circuits for the following:
o An open
o A short to ground
o A short to voltage
o Shorted together
Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition? -- Go to Step 10
Go to Step 7

Step 7 Inspect for poor connections at the harness connector for the EBCM. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition? -- Go to Step 10
Go to Step 9

Step 8 Replace the wheel speed sensor. Refer to Wheel Bearing/Hub Replacement - Front in Front Suspension or Wheel Bearing/Hub Replacement - Rear in Rear Suspension.
Did you complete the replacement? -- Go to Step 10
--
Step 9 Replace the EBCM. Refer to Electronic Brake Control Module (EBCM) Replacement .
Did you complete the repair? -- Go to Step 10
--
Step 10 1. Use the scan tool in order to clear the DTCs.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset? -- Go to Step 2
System OK

Hope this helps.

Bill