Powertrain
generic / SAE
P0132
O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)
The upstream oxygen sensor signal is fixed at a high voltage, indicating either a continuously rich exhaust on bank 1 or a short to supply voltage in the signal circuit.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 32
Possible causes
- Genuine rich running (leaking injector, high fuel pressure) high
- Signal wire shorted to supply voltage medium
- Sensor poisoned by silicone or coolant low
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Inspection / repair
- Difficulty: medium
- DIY: possible
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References
sae:J2012