P1162low severityPowertrain
HO2S Heater Circuit Bank 1 Sensor 2
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
A fault is detected in the heater circuit of the bank 1 downstream oxygen sensor. This is a GM-specific code similar to generic P0141.
Symptoms
- Check engine light on
- Slow sensor warm-up
- Failed emissions test
Common causes
- Faulty O2 sensor heater
- Blown heater fuse
- Wiring or connector fault
- Poor ground
Diagnostic steps
- Scan and record heater circuit codes
- Check O2 heater fuse
- Measure heater resistance
- Inspect wiring and replace sensor
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Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control