P0060: HO2S Heater Resistance (Bank 2, Sensor 2) – abnormal resistance detected in the heated oxygen sensor heater circuit on engine Bank 2 Sensor 2
Check Engine Light illuminated; potential reduced fuel efficiency and emissions performance; minor drivability symptoms possible
Overview
OBD-II DTC P0060 indicates abnormal resistance in the heated downstream oxygen sensor heater circuit (Bank 2, Sensor 2), often due to heater element failure or wiring issues affecting emissions and sensor operation
Common Symptoms
- Check Engine Light (MIL) illuminated
- Decreased fuel efficiency
- Rough idle or hesitation
- Poor emissions test results
- Possible minor performance degradation
Most Common Causes
Heater element internal failure or abnormal resistance triggers the code
Open or shorted heater circuit wiring commonly reported
Power supply interruption to heater circuit can mimic sensor fault
Rare; consider only after wiring and sensor tests are complete
Diagnostic Steps
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Connect OBD-II scanner and confirm presence of P0060; check for related codesExpected: P0060 code storedInterpretation: Confirms issue with Bank 2 Sensor 2 heater circuit
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Visually inspect wiring and connectors at Bank 2 Sensor 2 for damage or corrosionExpected: No broken, corroded, or loose connectionsInterpretation: If issues found, repair may clear code
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Measure heater circuit resistance with multimeterExpected: Resistance within manufacturer specification (typically low ohms)Interpretation: Out-of-range resistance suggests sensor heater fault
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Check power and ground at sensor connector with ignition ONExpected: Proper voltage and ground presentInterpretation: No power/ground suggests wiring or fuse/relay issue
Repair Solutions
Most common repair when heater resistance out of spec
Effective when visual damage is detected
Simple fix if power supply interruption is root cause
Only if controller is confirmed faulty after all other causes ruled out
Common Misdiagnoses
Avoid these common diagnostic mistakes:
- Interpreting P0060 as general oxygen sensor failure rather than heater circuit issue
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