Error code

OBD2 P0152

OBD2P0152
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

O2 Sensor Circuit High Voltage.

Severity

moderateCan drive, but emissions performance may be compromised.

Summary

P0152 indicates high voltage in the heated oxygen sensor circuit for Bank 2 Sensor 1, which is likely due to issues with the sensor itself or its wiring.

Common Causes

  • Faulty heated oxygen sensor (HO2S) in Bank 2 Sensor 1
  • Wiring damage or short circuits affecting the HO2S circuit

Diagnosis

  1. Check fuses and wiring for any obvious issues like blown fuses or chafed wires.
  2. Inspect the oxygen sensors for physical damage.
  3. Verify proper seating of connectors with no bent or broken pins or corrosion.
  4. Use a mechanic's stethoscope to check for exhaust leaks between the TWC and HO2S.
  5. Disconnect ECM and HO2S, then test circuit continuity.

Fixes

  • Replace faulty heated oxygen sensor (HO2S) or repair wiring issues as needed.

FAQ

What does P0152 mean?

P0152 indicates high voltage in the heated oxygen sensor circuit for Bank 2 Sensor 1, which is used to monitor emissions control system performance.

How do I fix P0152?

Fixing P0152 involves checking and repairing wiring issues or replacing a faulty heated oxygen sensor (HO2S).

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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