P249B
EGR Cooler Bypass Position Sensor Circuit Intermittent/Erratic Bank 2
P249B is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Position Sensor Circuit Intermittent/Erratic Bank 2. Common causes: egr bypass valve position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Unstable engine operation at idle
- Increased fuel consumption
- Check engine light comes on
- Reduced engine power
- Dips during acceleration
Causes
- EGR bypass valve position sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Contact corrosion
- Wiring Harness Problems
How to Fix
- Check the condition of the sensor connector and wiring
- Test bypass valve position sensor
- Check resistance and continuity
- Replace sensor if necessary
- Clear contacts and reconnect
Related codes
Error P249B by Vehicle Brand
FAQ
What does the P249B code mean?
P249B is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Position Sensor Circuit Intermittent/Erratic Bank 2
What causes a P249B error code?
The most common causes of P249B include: EGR bypass valve position sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Contact corrosion.
How do I fix a P249B diagnostic trouble code?
To fix P249B: Check the condition of the sensor connector and wiring. Test bypass valve position sensor. Check resistance and continuity. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P249B?
Limited driving only, diagnose soon
How much does it cost to fix P249B?
The estimated repair cost for P249B is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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