Fault Code P2238
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2238
O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1
This code indicates a low voltage in the positive current control circuit of the Oxygen (O2) sensor for bank 1, sensor 1. This suggests a short to ground or a wiring issue.
Part Details
Part Name
O2 Sensor Upstream Bank 1
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1,200
Engine Location
Exhaust system, before catalytic converter
Symptoms
- Check Engine Light on
- Increased fuel consumption
- Strong fuel smell
- Uneven engine performance
Possible Causes
- 1Short to ground in O2 sensor wiring
- 2Faulty O2 sensor
- 3Partially open circuit in wiring
- 4Defective Engine Control Module (ECM)
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