Error code

OBD2 P0141

OBD2P0141
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

O2 Sensor Heater Circuit.

Severity

moderateCan drive, but may fail emissions testing.

Summary

Code P0141 indicates a malfunction in the heater circuit of the downstream oxygen sensor (HO2S) on bank 1 of your engine.

Symptoms

  • Illuminated check engine light

Common Causes

  • Problem on the ground side of the O2 sensor heater circuit
  • Problem on the power side of the O2 sensor heater circuit
  • High resistance in the O2 sensor heater element
  • Open circuit in the O2 sensor heater element

Diagnosis

  1. Test the heater circuit wiring for power and ground using a digital multimeter.
  2. Check the resistance of the sensor heating element to determine if it has high resistance or an open circuit.

Fixes

  • Replace faulty O2 sensor or repair damaged wiring in the heater circuit.

FAQ

What does P0141 mean?

P0141 indicates a malfunction in the heater circuit of the downstream oxygen sensor on bank 1.

How do I diagnose P0141?

Diagnose by testing the power and ground connections, as well as checking for high resistance or open circuits in the O2 sensor heating element.

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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