P2195 - O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1)
DTC DESCRIPTION P2195 - O2 SENSOR SIGNAL BIASED/STUCK LEAN (BANK 1 SENSOR 1)
| Description: |
A heated oxygen sensor bank 1, sensor 1 (HO2S11) indicating lean at the end of a test is trying to correct for an over lean condition. This DTC sets when the fuel control system no longer detects switching for a calibrated amount of time. |
| Possible Causes: |
- Water in the harness connector
- UO2SPC11 circuit open (if equipped)
- HO2S11 circuit open (if equipped)
- Corrosion
- Incorrect connections
- Low fuel pressure or running out of fuel
- EVAP purge valve stuck open
- Biased MAP sensor signal (if equipped)
- Incorrect learned ethanol content
- Air leaks after the mass airflow (MAF) sensor (if equipped)
- Contaminated MAF sensor (if equipped)
- Vacuum leaks
- Positive crankcase ventilation (PCV) system is leaking
- Incorrectly seated engine oil level indicator
- Leaking gasket
- Camshaft timing
- Exhaust leaks before or near the universal HO2S11 (if equipped)
- Exhaust leaks before or near the HO2S11 (if equipped)
- Damaged universal HO2S11 (if equipped)
- Damaged HO2S11 (if equipped)
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| Diagnostic Aids: |
|
| Application |
Key On Engine Off |
Key On Engine Running |
Continuous Memory |
| All |
GO to Pinpoint Test H. |