Trouble codes › P0132

P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

Oxygen sensors

P0132 means bank 1's front oxygen sensor is stuck at high voltage (rich), from a failed sensor, wiring or a real rich condition.

The front oxygen sensor on bank 1 is staying at high voltage, which normally means a rich mixture. Either the engine really is rich or the sensor or wiring is faulty.

Can I keep driving? Yes, but get it fixed soon.

Usually drivable, but running rich wastes fuel and can harm the catalytic converter. Get it checked soon.

Common causes

  1. A failed or fuel-contaminated oxygen sensor
  2. A short to voltage in the signal wire
  3. A real rich condition (leaking injector, high fuel pressure)
  4. Coolant or oil contamination of the sensor

Symptoms

  • Check-engine light
  • Poor fuel economy, fuel smell
  • Sometimes black smoke

What to check first

  1. Check for rich codes (P0172) and fix those first.
  2. Inspect the wiring for damage or rubbing against other wires.
  3. Watch the sensor with a scan tool: a vacuum leak (or pulling a vacuum hose briefly) should drive it low.
  4. Replace the sensor if it stays high.

What does P0132 mean on your vehicle?

The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.

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Related codes

General guidance for P0132 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.