P20EB
Reductant Control Module Power Relay De-Energized Performance - Too Late
P20EB is an OBD-II diagnostic trouble code meaning: Reductant Control Module Power Relay De-Energized Performance - Too Late. Common causes: faulty reductant module power relay, damage to the wiring harness to the module. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- SCR System Error Message
- Increased NOx emissions
Causes
- Faulty reductant module power relay
- Damage to the wiring harness to the module
- Control module power problems
- Malfunction of the reductant module itself
- Short circuit in relay control circuit
How to Fix
- Check the condition of the reductant module power relay
- Check the integrity of the wiring harness and connections
- Measure the voltage at the control module terminals
- Replace the faulty relay if necessary
- Test the operation of the system after repair
Related codes
Error P20EB by Vehicle Brand
FAQ
What does the P20EB code mean?
P20EB is an OBD-II diagnostic trouble code that indicates: Reductant Control Module Power Relay De-Energized Performance - Too Late
What causes a P20EB error code?
The most common causes of P20EB include: Faulty reductant module power relay; Damage to the wiring harness to the module; Control module power problems; Malfunction of the reductant module itself.
How do I fix a P20EB diagnostic trouble code?
To fix P20EB: Check the condition of the reductant module power relay. Check the integrity of the wiring harness and connections. Measure the voltage at the control module terminals. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20EB?
Yes, but get it checked soon
How much does it cost to fix P20EB?
The estimated repair cost for P20EB is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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