DTC P027E, P2DD7
DTC P027E : Cold Start Air Fuel Ratio Control System Command Lean Bank1
DTC P2DD7 : Cold Start Air Fuel Ratio Control System Command Lean Bank2
NOTE:
- Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems .
- Information marked with an asterisk (*) applies to the left bank (Bank 2).
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P027E Cold Start Air Fuel Ratio Control System Command Lean Bank1 | ||
| P2DD7 Cold Start Air Fuel Ratio Control System Command Lean Bank2 |
DTC (PGM-FI)
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Let the engine cool until the value of ECT SENSOR 1 is 77 °F (25 °C) or less.
Signal Current conditions Values Unit ECT SENSOR 1 - 3. Clear the DTC with the HDS.
- 4. Turn the vehicle to the OFF (LOCK) mode.
- 5. Start the engine, and let it idle for 10 seconds or more.
- 6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P027E Cold Start Air Fuel Ratio Control System Command Lean Bank1 P2DD7 Cold Start Air Fuel Ratio Control System Command Lean Bank2 Is DTC P027E and/or P2DD7* indicated?
YES
The failure is duplicated. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (9-Speed A/T) (2019 2020 2021), or PCM Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T) , then recheck. If DTC P027E and/or P2DD7* goes away and the PCM was substituted, replace the original PCM - Refer to: PCM Removal and Installation (9-Speed A/T) (2019 2020 2021), or PCM Removal and Installation (6-Speed A/T), ('16-'18 9-Speed A/T) .
NO
Intermittent failure, the system is OK at this time. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .