P1229
Sensor Power Supply Circuit Shorted
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation
- The engine goes into emergency mode
Causes
- Wiring harness damage
- Short circuit in the sensor power supply circuit
- Sensor malfunction
- Problems with the engine control unit
- Contact corrosion
How to Fix
- Check wiring harness for damage
- Check the sensor power circuit for a short circuit
- Replace faulty sensor
- Check and clean contacts
- Check the engine control unit