P20B0
Reductant Metering Unit Temperature Sensor Circuit Intermittent/Erratic
P20B0 is an OBD-II diagnostic trouble code meaning: Reductant Metering Unit Temperature Sensor Circuit Intermittent/Erratic. Common causes: open or short circuit in the sensor circuit, reductant temperature sensor malfunction. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Activation of emergency operation
- Unstable engine idling
Causes
- Open or short circuit in the sensor circuit
- Reductant temperature sensor malfunction
- Poor contact in the sensor connector
- Wiring harness damage
- SCR control module malfunction
How to Fix
- Check the integrity of the wiring and connectors of the sensor
- Check the resistance of the temperature sensor
- Check reference voltage and signal circuit
- If necessary, replace the reductant temperature sensor
- Scan the system for additional trouble codes
Related codes
Error P20B0 by Vehicle Brand
FAQ
What does the P20B0 code mean?
P20B0 is an OBD-II diagnostic trouble code that indicates: Reductant Metering Unit Temperature Sensor Circuit Intermittent/Erratic
What causes a P20B0 error code?
The most common causes of P20B0 include: Open or short circuit in the sensor circuit; Reductant temperature sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P20B0 diagnostic trouble code?
To fix P20B0: Check the integrity of the wiring and connectors of the sensor. Check the resistance of the temperature sensor. Check reference voltage and signal circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20B0?
Limited driving only, diagnose soon
How much does it cost to fix P20B0?
The estimated repair cost for P20B0 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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