I originally posted a thread on this problem right after I installed a BLACKWING and "cold air box", aftermarket bridge, silicone connecting hoses and open shroud. All connections have been checked over and over and I used T-bolt clamps instead of worm screw clamps.
I can drive normally for about 20 miles and get the CEL. I wasn't driving it hard, in fact, I was cruising home in "rush hour" traffic.
I'm assuming that the CEL is related to the BLACKWING and "cold air box" modification...but, none of the codes seem to indicate anything with the MAF. When I drove the car home 135 miles in June with the oem air box and filter, there was no CEL.
I checked the codes and everything shows history only, nothing current. So, here are my history codes if someone (maybe Bill Curlee?) can tell me what they specifically mean. The car runs fine, doesn't go into limp mode, etc.
B0856 (5v out of range?)
2283
2284
2285
2287 (these all said something about battery #1 or battery #2?)
C1276 (accelerator pedal position-APP-sensor 1 performance)
I saw a lot of 1016 codes, but I think that just means the computer wasn't connected to the battery for those times.
Thanks!

 

...I had hopes of someone having an answer for me overnight. Can anyone tell me where the Accelerator Pedal Position sensor 1 is then? Maybe, some wires got stretched or damaged during the BLACKWING install...thanks.

 

here look at this for C1276
http://www.gearchatter.com/viewtopic10319.php


But did you check all your battery connections and make sure they are clean. Could be something with that. Seems the C5 gets weird when the battery is not 100% putting out.

 

You seem to have quite a few electrical problems so it might be worthwhile to check your battery and its wiring. Pay special attention to the ground points under the hood. I would also pull the battery and check for acid leakage into the wiring harness or the TAC or PCM modules which are there.

The APP could cause your CEL but the other codes will not light the CEL. The APP is in the passenger compartment with the gas pedal. The TAC module which it is wired to is in the right front wheel well area with the PCM.

C1276 (accelerator pedal position-APP-sensor 1 performance)
Are you sure you have the letter correctly noted? The C1276 is related to delivered torque signal between the PCM and EBCM. P1276 is related to the APP.

DTC P1276
Circuit Description
The accelerator pedal position (APP) sensor is mounted on the accelerator pedal assembly. The sensor is actually 3 individual APP sensors within 1 housing. Three separate signal, low reference and 5-volt reference circuits connect the APP sensor assembly to the throttle actuator control (TAC) module. Each sensor has a unique functionality. The APP sensor 1 signal is pulled up to the reference voltage as the accelerator pedal is depressed, from below 1 volt at 0 percent pedal travel, with the pedal at rest. To above 2 volts at 100 percent pedal travel, with the pedal fully depressed. The APP sensor 2 signal is pulled down to the low reference from above 4 volts at 0 percent pedal travel to below 2.9 volts at 100 percent pedal travel. The APP sensor 3 signal is pulled down to low reference from above 3.8 volts at 0 percent pedal travel to below 3.1 volts at 100 percent pedal travel. TP sensor 1 and APP sensor 1 share a 5 volt reference circuit that is connected within the TAC module. TP sensor 2 and APP sensor 2 share a 5-volt reference circuit that is connected within the TAC module. If only 1 APP sensor DTC is set, the redundant APP systems allow the TAC system to continue operating normally. One APP sensor DTC will not cause the Reduced Engine Power message to be displayed. Two APP sensor DTCs for the same sensor also will not cause the Reduced Engine Power message to be displayed. If an out of range condition is detected with the APP sensors, this DTC will be set.

Conditions for Running the DTC
DTCs P0606, P1517, or P1518 are not set.
The ignition switch is in the crank or run position.
The ignition voltage is greater than 5.23 volts.
Conditions for Setting the DTC
APP sensor 1 disagrees with APP sensor 2 by more than 10.5 percent and APP sensor 1 disagrees with APP sensor 3 by more than 13 percent.
All of the above conditions are present for less than 1 second.
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.
If one or more APP sensor DTCs are set for a single APP sensor, the following occurs:
The control module will not command Reduced Engine Power mode.
The control module will use the remaining two APP sensors to calculate throttle response.
If certain multiple APP sensor DTCs are set for more than one APP sensor, the following occurs:
The control module commands Reduced Engine Power mode.
The APP indicated angle is limited to a predetermined value to limit the amount of throttle control.
The message center displays Reduced Engine Power.
If all three APP sensors are out of range, the following occurs:
The control module commands Reduced Engine Power mode.
The APP indicated angle is limited to 0 percent. The control module only allows the engine to idle.
The message center displays Reduced Engine Power.
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
Inspect the TAC module connectors for signs of water intrusion. When water intrusion occurs, multiple DTCs could be set with no DTC circuit or component conditions found during diagnostic testing.
When the TAC module detects throttle movement with a DTC P1275 set, a DTC P1276 also sets.
When the TAC module detects a condition within the TAC system, more than 1 TAC system related DTC may set. This is due to the many redundant tests that run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Disconnecting components during testing may set additional DTCs. Keep this in mind when reviewing the stored information, Capture info.
For an intermittent, refer to Intermittent Conditions .
Test description
The numbers below refer to the steps numbers in the diagnostic table.

This step determines if a communication condition exists.

This step isolates an internal APP sensor failure. The condition may only occur at a certain accelerator pedal position. Monitoring the APP angles for sensor 2 and sensor 3 is an accurate way of verifying the actual position of the pedal. The APP angles for all 3 sensors should be within a few percentages of each other. When the pedal is at rest, the APP angle for all 3 sensors should be 0 percent. When the pedal is fully depressed, all APP angles should be 100 percent.

The APP sensor 1 shares a common 5-volt reference circuit with the TP sensor 1. Monitoring the TP sensor 1 voltage aids in diagnosing the APP sensor 5-volt reference and the low reference circuits. If the scan tool displays near 0 volts then the circuits are OK.

With the TAC module still connected, this test will help determine a short to the signal circuit either within the TAC module or the wiring.

This step determines whether the TAC module or a shorted circuit is causing the condition.

When the TAC module detects a condition within the TAC system, more than 1 TAC system related DTC may set. This is due to the many redundant tests that run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Disconnecting the components during testing may set additional DTCs. Keep this in mind when reviewing the stored information, Capture info.


B0856 (5v out of range?)
DTC B0856
Circuit Description
The memory seat module has two battery voltage supply circuits. The battery 1 voltage supply circuit is used to provide power for the memory seat module logic and internal driver operation. The battery 2 voltage supply circuit is used to provide a high current supply for the memory seat module output devices.

Conditions for Running the DTC
The battery 1 circuit voltage to the memory seat module is within 6.5-26.5 volts.

Conditions for Setting the DTC
The memory seat module detects battery 2 voltage under 8.5 volts or over 16.3 volts.
The condition must be present for 2 seconds.
Action Taken When the DTC Sets
A history DTC is stored in the memory seat module.
Memory seat module DTCs can only be set as a history code even if the fault is current.
No driver warning message will be displayed for these DTCs.

2283
2284
2285
DTC B2282-B2285
Circuit Description
The driver door module (DDM) and passenger door module (PDM) each have a high and low power feed . The low power feed, battery 1, is used to provide power for the door module logic and internal driver operation. The high power feed, battery 2, is used to provide power for systems that draw higher amounts of current. The door modules monitor the voltage level at battery 1 and battery 2 to determine if the voltage level is out of range. If the voltage level is out of range, a DTC is set.

Conditions for Setting the DTC
The door module detects battery 1 or battery 2 voltage range under 8.5 volts or over 16.3 volts.
Condition must be present for greater than 2 seconds.
Action Taken When the DTC Sets
Stores a history DTC B2282, B2283, B2284 or B2285 in the door module memory.
These DTCs can only be set as a history code even if the malfunction is current.
No driver warning message will be displayed for this DTC.
Conditions for Clearing the DTC
The door module no longer detects battery 1 or battery 2 voltage below 8.5 volts or higher than 16.3 volts for greater than 2 seconds.
The DTC is cleared using the IPC clearing feature, or
The DTC is cleared using a scan tool.
Diagnostic Aids
The following conditions may cause an intermittent malfunction:
There is an intermittent open or short to ground in a battery 1 or battery 2 circuit.
The battery voltage is out of range.
A charging system malfunction.
Using a scan tool, select DCM Data display and monitor battery 1 and battery 2 voltage while operating the door locks and heated mirrors. This can determine if battery 1 or battery 2 voltage is affected by these devises and can help duplicate the malfunction.
If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent and Poor Connections in Wiring Systems.


2287 (these all said something about battery #1 or battery #2?)

DTC B2286-B2287
Circuit Description
The driver door module (DDM) and the passenger door module (PDM) receive vertical and horizontal position signals from the mirrors. These signals are used by the DDM and PDM for memory recall functions to determine the vertical and horizontal positions of the mirrors. The DDM and PDM command the mirror memory settings based on the voltage level they receive back from the position sensors. Each door module provides a 5 volt supply, a signal, and a ground circuit to the sensors. The sensors are variable resistors that the DDM and PDM monitor the voltage level across. When a memory setting is recalled, the DDM and PDM command the mirror motors in the appropriate direction until the position sensors are within the voltage range stored in memory. The DDM and PDM monitor the mirror position sensors 5 volt supply circuits to determine if the voltage level received is out of range. If the DDM or PDM detects a voltage level out of range for greater than 2 seconds, a DTC is set.

Conditions for Setting the DTC
The DDM or PDM detects a mirror vertical or horizontal position sensor supply voltage range under 4.0 volts or over 5.2 volts.
Condition must be present for 2 seconds.
Action Taken When the DTC Sets
Stores a history DTC B2286 or B2287 in DDM or PDM memory.
These DTCs can only be set as a history code even if the malfunction is current.
No driver warning message will be displayed for this DTC.
Conditions for Clearing the DTC
The DDM or PDM detects the mirror vertical and horizontal position sensor supply voltage range between 4.0-5.2 volts for greater than 2 seconds, and:
The DTC is cleared using the IPC clearing feature, or
The DTC is cleared using a scan tool.
Diagnostic Aids
The following conditions may cause an intermittent malfunction:
There is an intermittent short to ground or voltage in a mirror position sensor reference circuit.
There is an intermittent short to voltage in a mirror position sensor signal circuit.
A mirror vertical or horizontal sensor is shorted internally.
If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent and Poor Connections in Wiring Systems.

Hope this helps point you in the right direction. I did not post the diagnostic tables since you probably need to start with the battery and wiring first to see if there is a simple fix like cleaning ground points or connector pins first. None of this seems related to the Blackwing install.

Bill

 

Thanks to both of you and thanks Bill for your detailed explanation. I'll double check that 1276 code again to clarify. I've been reading that 1276 could be either traction control or accelerator pedal position, but I didn't know if they were interconnected.
I don't believe it has to do with battery leakage causing problems. When I got the car in June, the first thing I did was to pull the oem battery (#1961 w/ 3,800 miles, now 4,200 miles). There was no evidence of acid damage, but I replaced the battery with a red top OPTIMA anyway.
I haven't had any issues with the doors or seats (if that's any indication), so those might be just history codes from the previous owner. Looks like I'll be using my warranty at the dealership...thanks again.

 

I double checked the history codes and it is C1276...I don't know why, but somehow it makes me feel better that it has to do with delivered torque signal rather than accelerator pedal position and not related to the BLACKWING installation. The dealer has saved me a spot next week. Thanks again.