DTC P011A
DTC P011A : ECT Sensor 1 Circuit Range/Performance Problem
NOTE:
- Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the A/T System (2014 2015), or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016) .
- If DTC P0111 is stored at the same time as DTC P011A, troubleshoot DTC P0111 first, then recheck for DTC P011A.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P011A ECT Sensor 1 Circuit Range/Performance Problem |
DTC (PGM-FI)
- Connector visual check
-1. Check for poor connections or loose terminals at these parts:
- ECT sensor 1
- ECT sensor 2
Are the connections and terminals OK?
YES
The connectors are OK. Go to step 2.
NO
Repair the connections or terminals.
- PGM-FI system check
-1. Turn the vehicle to the ON mode.
- 2. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P011A ECT Sensor 1 Circuit Range/Performance Problem P2183 ECT Sensor 2 Circuit Range/Performance Problem Are DTC P011A and P2183 indicated at the same time?
YES
Go to step 5.
NO
Only DTC P011A is indicated. Go to step 3
- ECT sensor 1 performance check
-1. Start the engine, and let it idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 1 Less than 108 °F Less than 42 °C Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and Installation, or ECT Sensor 2 Removal and Installation .
NO
ECT sensor 1 is OK at this time. Go to step 4.
- Problem verification
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Allow ECT sensor 1 and the engine to cool to the ambient temperature.
- 3. Note the ambient temperature.
- 4. Turn the vehicle to the ON mode.
- 5. Quickly note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Signal Current conditions Values Unit ECT SENSOR 1 - 6. Compare the value of ECT SENSOR 1 with the ambient temperature.
Does the value of ECT SENSOR 1 differ 5.4 °F (3 °C) or more from the ambient temperature?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and Installation, or ECT Sensor 2 Removal and Installation .
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- ECT sensor 1 performance check
-1. Start the engine, and let it idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 1 Less than 108 °F Less than 42 °C Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and Installation, or ECT Sensor 2 Removal and Installation .
NO
ECT sensor 1 is OK at this time. Go to step 6.
- ECT sensor 2 performance check
-1. Let the engine idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 2 Less than 108 °F Less than 42 °C Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 2 - Refer to: ECT Sensor 1 Removal and Installation, or ECT Sensor 2 Removal and Installation .
NO
Go to step 7.
- Problem verification
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Allow the sensors and the engine to cool to the ambient temperature.
- 3. Note the ambient temperature.
- 4. Turn the vehicle to the ON mode.
- 5. Quickly note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Signal Current conditions Values Unit ECT SENSOR 1 ECT SENSOR 2 - 6. Compare the value of ECT sensor 1 and the value of ECT SENSOR 2 with the ambient temperature individually.
Does either sensor differ more than 5.4 °F (3 °C) from the ambient temperature?
YES
Replace the sensor that differed more than 5.4 °F (3 °C) from the ambient temperature.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.