Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P2237 Main Cause
Open or short in A/F sensor circuit. - DTC P2238 Main Cause
Open in A/F sensor circuit. - DTC P2239 Main Cause
Short in A/F sensor circuit. - Open or short in A/F sensor circuit.
- Defective A/F sensor.
- Defective A/F sensor heater.
- Defective EFI relay.
- Open or short in heater circuit of A/F sensor.
- Defective engine control module (ECM).