P2249
O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
P2249 is an OBD-II diagnostic trouble code meaning: O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1. Common causes: oxygen sensor malfunction, open or short circuit in wiring. Estimated repair cost: $33–89.
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Check Engine light comes on
- Reduced engine power
- Increased emissions of harmful substances
Causes
- Oxygen sensor malfunction
- Open or short circuit in wiring
- Poor contact in the sensor circuit
- ECM (Engine Control Module) malfunction
- Corrosion or oxidation of contacts
How to Fix
- Check the integrity of the wiring and contacts of the sensor
- Check the voltage in the sensor circuit
- Replace the oxygen sensor if necessary
- Check and replace ECM if necessary
- Clean contacts from corrosion
Related codes
Error P2249 by Vehicle Brand
FAQ
What does the P2249 code mean?
P2249 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 1
What causes a P2249 error code?
The most common causes of P2249 include: Oxygen sensor malfunction; Open or short circuit in wiring; Poor contact in the sensor circuit; ECM (Engine Control Module) malfunction.
How do I fix a P2249 diagnostic trouble code?
To fix P2249: Check the integrity of the wiring and contacts of the sensor. Check the voltage in the sensor circuit. Replace the oxygen sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2249?
Yes, but get it checked soon
How much does it cost to fix P2249?
The estimated repair cost for P2249 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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