Weird P0410 Code and gas smell
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 7,484
Likes: 2
From: Dayton, OH HAWG: "this is Off Topic...it can get a bit north of care bears and strawberry shortcake in here"
St. Jude Donor '08-'09-'10-'11
Weird P0410 Code and gas smell
I know the P0410 code is related to the AIR system. I'm getting the SES light, and that's the code. Weird thing is, it happens almost exclusively when the oil temp reaches ~125 F. And it's just the generic P0410 code.
Any ideas?
This could be related, or not, but every once in a while I'll park the car, come back the next day or a few days later, and there's a gas smell. If this happened every time the car was parked, I'd go for a fuel system leak, but it's very sporadic and very random. Guessing there's something to the position of the engine when I turn it off, though I'm at a loss as to what that could be. Stuck injector, perhaps? Car starts up and runs fine.
Ok, go!
Any ideas?
This could be related, or not, but every once in a while I'll park the car, come back the next day or a few days later, and there's a gas smell. If this happened every time the car was parked, I'd go for a fuel system leak, but it's very sporadic and very random. Guessing there's something to the position of the engine when I turn it off, though I'm at a loss as to what that could be. Stuck injector, perhaps? Car starts up and runs fine.
Ok, go!
Tech Contributor
Joined: Jan 2007
Posts: 19,421
Likes: 1,146
From: Dyer, IN
This could be related, or not, but every once in a while I'll park the car, come back the next day or a few days later, and there's a gas smell. If this happened every time the car was parked, I'd go for a fuel system leak, but it's very sporadic and very random. Guessing there's something to the position of the engine when I turn it off, though I'm at a loss as to what that could be. Stuck injector, perhaps? Car starts up and runs fine.
Ok, go!
Ok, go!
Thread Starter
Le Mans Master
Joined: Oct 2006
Posts: 7,484
Likes: 2
From: Dayton, OH HAWG: "this is Off Topic...it can get a bit north of care bears and strawberry shortcake in here"
St. Jude Donor '08-'09-'10-'11
Yes, no leaks visible. Just a smell, sometimes.
Tech Contributor
Joined: Oct 1999
Posts: 41,043
Likes: 9,807
From: Charlotte, NC (formerly Endicott, NY)
Not sure what is so generic about that code. Here is a description of what it means and a diagnostic procedure to follow to find out what is causing it.
DTC P0410
Circuit Description
A secondary air injection (AIR) pump is used on this vehicle in order to lower the tail pipe emissions during start-up. The powertrain control module (PCM) supplies a ground to the AIR pump relay, which energizes the AIR pump.
The PCM monitors the heated oxygen sensor (HO2S) voltages in order to diagnose the AIR system.
During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages, and monitors the short-term fuel trim values for both banks of the engine. If the AIR system is operating correctly, the HO2S voltages should be low, and the short-term fuel trim should be high.
If the PCM determines that the HO2S voltages for both banks did not respond with the expected results during the tests, DTC P0410 sets. If only 1 sensor responded, the PCM sets either DTC P1415 or DTC P1416. The active DTC indicates which bank has the inoperative AIR system.
Conditions for Running the DTC
If the AIR pump turns ON during a closed loop operation and the HO2S voltage does not fall below 222 mV for 1.3 seconds.
Or
If the AIR pump turns ON during a closed loop operation and the short-term fuel trim does not change more than a predetermined amount.
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Important
The numbers below refer to the step numbers on the diagnostic table.
Schematic Reference: Engine Controls Schematics
Did you perform the Diagnostic System Check-Engine Controls?
Is the AIR pump fuse or the ENG IGN 1 fuse OK?
Is DTC P0412 or P0418 active?
DTC P0410
Circuit Description
A secondary air injection (AIR) pump is used on this vehicle in order to lower the tail pipe emissions during start-up. The powertrain control module (PCM) supplies a ground to the AIR pump relay, which energizes the AIR pump.
The PCM monitors the heated oxygen sensor (HO2S) voltages in order to diagnose the AIR system.
During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages, and monitors the short-term fuel trim values for both banks of the engine. If the AIR system is operating correctly, the HO2S voltages should be low, and the short-term fuel trim should be high.
If the PCM determines that the HO2S voltages for both banks did not respond with the expected results during the tests, DTC P0410 sets. If only 1 sensor responded, the PCM sets either DTC P1415 or DTC P1416. The active DTC indicates which bank has the inoperative AIR system.
Conditions for Running the DTC
- DTCs P0101-P0103, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0125, P0171-P0175, P0200, P0300, P0335, P0336, P0351-P0358, P0440, P0442, P0443, P0446, P0449, P1120, P1220, P1221, P1258, or P1441 are not set.
- The fuel level is more than 12.5 percent but less than 87.5 percent.
- The engine is running for more than 30 seconds.
- The maximum air flow is 22 g/s.
- The air fuel ratio is 13.125:1.
- The engine load is less than 40 percent.
- The ignition voltage is more than 11.7 volts.
- Vehicle speed is more than 15 km/h (25 mph).
- The engine is not operating in any of the following modes:
- Power enrichment
- Decel fuel cut-off mode
- The catalyst over temperature
- The engine is operating in a closed loop for more than 15 seconds.
- The engine speed is more than 850 RPM.
- The engine coolant temperature (ECT) is between than -10°C to +110°C (14°F-230°F).
- The intake air temperature (IAT) is between -10°C to +100°C (14°F-212°F).
- The fuel system is operating in fuel trim cells 1, 2, 4, 5, or 6.
If the AIR pump turns ON during a closed loop operation and the HO2S voltage does not fall below 222 mV for 1.3 seconds.
Or
If the AIR pump turns ON during a closed loop operation and the short-term fuel trim does not change more than a predetermined amount.
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.
Important
- Before you service the PCM or the throttle actuator control (TAC), remove any debris from the module connector surfaces, and from the module connector gaskets. Verify that the gaskets are correctly installed. The gaskets prevent debris from contaminating the 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 component terminals and to the harness. Refer to Using Connector Test Adapters in Wiring Systems.
AIR Pump Relay Underhood Electrical Center Terminal Identification
Front of Vehicle
Left Side of Vehicle========Ignition========= B+ ======= Right Side of Vehicle
Pump Supply======Control
Left Side of Vehicle========Ignition========= B+ ======= Right Side of Vehicle
Pump Supply======Control
- For an intermittent condition, refer to Intermittent Conditions .
- An intermittent may be caused by any of the following conditions:
- Low system air flow may cause this DTC to set.
- Excessive exhaust system back pressure
- Moisture, water or debris ingested into the AIR pump
- Pinched, kinked, heat damaged, or deteriorated hoses or vacuum lines
- Restrictions in the pump inlet, duct, or filter
- An AIR pump that has become inoperative and shows signs of exhaust gases in the outlet port would indicate a check valve failure.
- Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Testing for Intermittent and Poor Connections .
- If a repair is necessary, refer to Wiring Repairs or Connector Repairs .
The numbers below refer to the step numbers on the diagnostic table.
- If DTCs P0412 or P0418 are set, diagnose those DTCs first.
- Inspects for excess resistance in all of the circuits that are associated with the AIR system.
- This step tests for the battery voltage at the AIR pump relay.
- This step tests for power to the AIR pump.
- This step tests the ground circuit for the AIR pump.
- This step tests for a grounded circuit between the AIR pump and the AIR pump relay.
- A restriction in a hose or in a pipe, between the shut-off valve and the point where the system branches to each bank, causes the setting of this DTC . Inspect for kinks or for blockages from the AIR pump to the connection point where the AIR system divides.
Step
Action
Yes
No
Schematic Reference: Engine Controls Schematics
1
Did you perform the Diagnostic System Check-Engine Controls?
Go to Step 2
2
Is the AIR pump fuse or the ENG IGN 1 fuse OK?
Go to Step 3
Go to Step 11
Is DTC P0412 or P0418 active?
Go to Step 4
- Turn ON the ignition, with the engine OFF.
- Command the AIR pump relay on with the scan tool.
- Turn OFF the ignition.
- Remove the AIR pump relay.
- Test the B+ supply circuit of the AIR pump relay coil for an open using a test lamp connected to ground. Refer to Diagnostic Aids for terminal identification.
- Install the AIR pump relay.
- Disconnect the AIR pump electrical connector. Refer to Secondary Air Injection (AIR) Pump Replacement .
- Connect a test lamp to battery ground.
- Probe terminal A of the AIR pump electrical connector. Refer to Probing Electrical Connectors in Wiring Systems.
- Turn ON the ignition, with the engine OFF.
- Command the AIR system ON with a scan tool.
Test the ground circuit of the AIR pump for an open or poor ground connection using a test lamp connected to B+ and probing the B terminal of the AIR pump electrical.
Is the test lamp illuminated?
Is the test lamp illuminated?
- Turn OFF the ignition.
- Disconnect the AIR pump outlet hose from the AIR pump.
- Turn ON the ignition, with the engine OFF.
- Command the AIR system ON with a scan tool.
- Turn OFF the ignition.
- Disconnect the vacuum hose from the AIR shut off valve.
- Start the engine.
- Command the AIR solenoid ON with a scan tool.
- Inspect for a restriction or for a blockage in the AIR Pump inlet hoses and in the AIR Pump inlet pipes.
- If you find a restriction or a blockage in the AIR hoses and in the pipes, repair the restriction as necessary.
- Turn OFF the ignition.
- Remove the AIR pump relay.
- Connect a test lamp to B+.
- Test the B+ supply to the AIR pump and the AIR pump relay coil at the relay connector for a short to ground using a test lamp. Refer to Probing Electrical Connectors .
- Refer to Diagnostic Aids for connector terminal identification.
- Disconnect the AIR pump electrical connector.
- Connect a test lamp to B+.
- Test the AIR pump connector terminal A with a test lamp for a short to ground.
- Install the AIR pump electrical connector.
- Install a new AIR pump fuse.
- Install the AIR pump relay.
- Turn ON the ignition, with the engine OFF.
- Command the AIR system ON with a scan tool.
- Install the following components:
- The AIR pump outlet hose to the AIR pump
- The vacuum hose to the AIR shut-off valve
- Disconnect the outlet hose of the AIR shut-off valve.
- Start and idle the engine.
- Command the AIR system with a scan tool.
Replace the AIR shut-off valve. Refer to Secondary Air Injection (AIR) Shut-Off Valve Replacement .
Did you complete the action?
Did you complete the action?
Repair the open in the B+ supply circuit to the AIR pump relay connector. Refer to Wiring Repairs in Wiring Systems.
Did you complete the action?
Did you complete the action?
Repair the open in the AIR pump load circuit between the AIR pump relay and the AIR pump connector. Refer to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Did you find and correct the condition?
Repair the poor ground connection or the open ground circuit of the AIR pump. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Did you complete the repair?
- Turn OFF the ignition.
- Disconnect the source vacuum hose from the AIR Solenoid Valve. Refer to Secondary Air Injection (AIR) Vacuum Control Solenoid Valve Replacement .
- Start and idle the engine.
- Turn OFF the ignition.
- Connect the source vacuum hose to the AIR solenoid valve.
- Disconnect the vacuum hose to the AIR shut-off valve at the AIR solenoid valve.
- Start and idle the engine.
- Command the AIR solenoid valve ON with a scan tool.
Repair the restriction, the blockage, or the damage to the vacuum hose.
Did you complete the repair?
Did you complete the repair?
Repair the conditions in the AIR hose between the AIR shut-off valve and the point where the system branches to both sides of the engine.
Did you complete the repair?
Did you complete the repair?
Repair the short to ground in the ignition positive voltage circuit between the fuse and the relay. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Did you complete the repair?
Repair the short to ground in the circuit between the AIR pump relay and the AIR pump. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Did you complete the repair?
Replace the AIR pump relay.
Did you complete the replacement?
Did you complete the replacement?
Replace the AIR Solenoid Valve. Refer to Secondary Air Injection (AIR) Vacuum Control Solenoid Valve Replacement .
Did you complete the replacement?
Did you complete the replacement?
- Inspect for poor connections at the AIR pump electrical connector. Refer to Testing for Intermittent and Poor Connections in Wiring Systems.
- If you find a poor connection, repair the terminal as necessary. Refer to Repairing Connector Terminals in Wiring Systems.
Replace the AIR pump. Refer to Secondary Air Injection (AIR) Pump Replacement .
Did you complete the replacement?
Did you complete the replacement?
- Clear the DTCs with a scan tool.
- Turn OFF the ignition for 30 seconds.
- Start the engine.
- Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Use a scan tool in order to observe the stored information in Capture Info.
Does the scan tool display any DTCs that you have not diagnosed?
Does the scan tool display any DTCs that you have not diagnosed?
Bill
Last edited by Bill Dearborn; Feb 4, 2010 at 02:48 AM.
