P2239
O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1
P2239 is an OBD-II diagnostic trouble code meaning: O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1. Common causes: short circuit in the oxygen sensor heating circuit, malfunction of the oxygen sensor itself. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Reduced engine power
- Unstable engine idling
- Dips during acceleration
Causes
- Short circuit in the oxygen sensor heating circuit
- Malfunction of the oxygen sensor itself
- Problems with the wiring harness to the sensor
- Damage to wire insulation
- Malfunction of the engine control unit (rare)
How to Fix
- Visual inspection of the wiring and connectors of the oxygen sensor
- Checking the resistance of the sensor heating circuit
- Checking the voltage in the control circuit
- Replacing the oxygen sensor if necessary
- Repair or replace damaged wiring
Related codes
Error P2239 by Vehicle Brand
FAQ
What does the P2239 code mean?
P2239 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 1
What causes a P2239 error code?
The most common causes of P2239 include: Short circuit in the oxygen sensor heating circuit; Malfunction of the oxygen sensor itself; Problems with the wiring harness to the sensor; Damage to wire insulation.
How do I fix a P2239 diagnostic trouble code?
To fix P2239: Visual inspection of the wiring and connectors of the oxygen sensor. Checking the resistance of the sensor heating circuit. Checking the voltage in the control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2239?
Yes, but get it checked soon
How much does it cost to fix P2239?
The estimated repair cost for P2239 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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