P0139 OBD Trouble Code
4 results found
| Type | Powertrain - Fuel and Air Metering - ISO/SAE Controlled |
|---|---|
| Description | O2 Sensor Circuit Slow Response |
| Location | Bank 1 Sensor 2 |
| Type | Powertrain - Fuel and Air Metering - ISO/SAE Controlled |
|---|---|
| Description | HO2S Remains At Center Conditions |
| Location | Bank 1 Sensor 2 |
| Cause | Engine runtime over 2 minutes, ECT sensor input more than 176°F, then the test started and the PCM did not detect a rich or a lean condition from the rear HO2S-12, or it detected that the HO2S-12 signal remained fixed at 0.5v for over 1.5 minutes. |
| Type | Powertrain - Fuel and Air Metering - ISO/SAE Controlled |
|---|---|
| Description | HO2S Circuit Slow Response Conditions |
| Location | Bank 1 Sensor 2 |
| Cause | No PCM codes set, test not completed for current ignition cycle, Low Coolant Level not on, then the PCM detected the Bank 1 HO2S-12 average time to change from L-R of more than 150 ms. |
| Type | Powertrain - Fuel and Air Metering - ISO/SAE Controlled |
|---|---|
| Description | Heated oxygen sensor (HO2S) 2, Bank 1 - circuit malfunction |
| Cause | Wiring, HO2S, intake/fuel system, injector, ECM |
Try also: https://www.obd-codes.com/p0139
