P2490
EGR Cooler Bypass Control Circuit Low Bank 2
P2490 is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Control Circuit Low Bank 2. Common causes: open or short circuit in control circuit wiring harness, egr cooler bypass solenoid valve malfunction. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation at idle
- Dips during acceleration
Causes
- Open or short circuit in control circuit wiring harness
- EGR cooler bypass solenoid valve malfunction
- Poor contact in control circuit connectors
- Problems with the engine control unit (ECU)
- Mechanical damage to EGR system components
How to Fix
- Check the integrity of the control circuit wiring harness
- Check the resistance and operation of the bypass solenoid valve
- Clean the connector contacts and check the quality of connections
- Check control circuit voltage
- If necessary, replace the solenoid valve or repair the wiring harness
Related codes
Error P2490 by Vehicle Brand
FAQ
What does the P2490 code mean?
P2490 is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Control Circuit Low Bank 2
What causes a P2490 error code?
The most common causes of P2490 include: Open or short circuit in control circuit wiring harness; EGR cooler bypass solenoid valve malfunction; Poor contact in control circuit connectors; Problems with the engine control unit (ECU).
How do I fix a P2490 diagnostic trouble code?
To fix P2490: Check the integrity of the control circuit wiring harness. Check the resistance and operation of the bypass solenoid valve. Clean the connector contacts and check the quality of connections. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2490?
Yes, but get it checked soon
How much does it cost to fix P2490?
The estimated repair cost for P2490 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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