P1132
Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Increased fuel consumption
- Black smoke from the exhaust pipe
- Unstable engine idling
- Loss of engine power
- Smell of gasoline from the exhaust pipe
Causes
- Oxygen sensor malfunction
- Leaks in the fuel system (injectors, pressure regulator)
- Problems with the ignition system (plugs, coils)
- Contamination or damage to the air flow sensor
- Coolant temperature sensor malfunction
How to Fix
- Check the oxygen sensor readings with a scanner
- Inspect fuel injectors for leaks
- Check the condition of the spark plugs and coils
- Clean or replace the mass air flow sensor if necessary
- Replace a faulty oxygen sensor