P1152
Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Power Loss
- Check Engine Light Is On
- Black smoke from the exhaust pipe
Causes
- Faulty Bank 2 oxygen sensor
- Leaking fuel injectors
- High fuel pressure
- Engine management system malfunction
- Contaminated or damaged oxygen sensor
How to Fix
- Check the voltage and signal of the oxygen sensor
- Inspect fuel injectors for leaks
- Check the pressure in the fuel system
- Check sensor wiring harness and connectors
- Replacing the oxygen sensor if necessary