O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)
Same condition as P0132 but on bank 2. The upstream sensor reports a continuously rich condition or has a short to supply voltage.
Affected components
- Oxygen sensor upstream
- Fuel injector
Common causes
- High likelihood: Bank 2 running rich (leaking injector, high fuel pressure)
- Medium likelihood: Signal wire shorted to supply voltage
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.