P0060
HO2S Heater Resistance Bank 2 Sensor 2.
- Generic
- Powertrain
- Generic code
- Low severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 0
- AreaFuel and air metering, auxiliary emission controls
- 60
- FaultThe specific fault in that area
What it means
P0060 is the generic code for a fault in the heater circuit resistance of the downstream oxygen sensor (Bank 2, Sensor 2) as defined by SAE J2012. The control unit monitors the heater's resistance or current and sets the code when it falls outside the expected range, which points to an open circuit, a short or a failed heater element. Bank 2 is the side of the engine that does not contain cylinder number one.
Symptoms
- Engine warning light on
- Usually no noticeable change in driveability
- Slightly slower catalyst monitor readiness or monitor not completing
- Possible emissions test failure due to incomplete monitors
- Other oxygen sensor heater or catalyst codes stored alongside it
Possible causes
- Failed internal heater element in the Bank 2 Sensor 2 oxygen sensorlikely
- Damaged, chafed or melted wiring to the sensor heater, often near the exhaustlikely
- Corroded, loose or contaminated sensor connector terminalspossible
- Blown fuse or faulty relay supplying the heater circuit (depends on model)possible
- Fault in the heater driver circuit inside the engine control unitrare
- Wiring harness short to earth or to voltage elsewhere along its runrare
How to diagnose
- Read all stored and pending codes and note the freeze frame data, including engine temperature and mileage
- Visually inspect the Bank 2 Sensor 2 wiring and connector for damage, heat marks, rubbing and corrosion
- Confirm which side is Bank 2 and that the sensor identified is the downstream one, using the model's service information
- Check the fuse and relay for the oxygen sensor heater circuit, where fitted, against the wiring diagram
- Measure the heater resistance across the sensor's heater terminals with the sensor unplugged and compare with the manufacturer's specification
- Check for battery supply and a good earth or control signal at the harness connector with the ignition on, following the wiring diagram
- Check the heater circuit wiring for continuity and for shorts to earth or voltage
- If the sensor and wiring test good, check the control unit's heater driver output and see if a software update applies to that model
How to fix
- Replace the Bank 2 Sensor 2 oxygen sensor if the heater resistance is out of specification
- Repair or replace damaged wiring and secure it away from hot or moving parts
- Clean or replace corroded connector terminals or the connector itself
- Replace the blown fuse or faulty relay after finding out why it failed
- Repair or replace the control unit only if the driver fault is confirmed, and apply any available calibration update where it is a known cause
Can I keep driving?
Low severity
The car can normally be driven as the downstream sensor mainly monitors the catalyst, but book it in soon as the fault will keep the warning light on and may cause an emissions test failure.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.
