The P20C2 OBD-II code indicates a performance issue with the Reductant Heater “C” control circuit. This component is crucial for ensuring that the Diesel Exhaust Fluid (DEF) is effectively heated to prevent crystallization and to assist in the proper functioning of the exhaust system.
What Does the P20C2 Code Mean?
The P20C2 code is stored when the powertrain control module (PCM) detects a performance issue with the Reductant Heater “C”. This heater is responsible for warming the DEF to facilitate the reduction of harmful exhaust emissions.
What Causes the P20C2 Code?
Several factors can trigger the P20C2 code, including:
- Glow plug control module failure
- Reductant tank heater failure
- Wiring issues within the control circuit
What Are the Symptoms of the P20C2 Code?
Drivers may experience the following symptoms when the P20C2 code is present:
- Failure of the Diesel Particulate Filter (DPF) to regenerate
- Warning lights on the dashboard
- Reduced engine performance
How Serious Is the P20C2 Code?
The P20C2 code is classified as urgent, indicating that immediate action is necessary. Ignoring this issue can lead to severe damage to the vehicle’s emissions system and affect overall vehicle performance.
How to Diagnose the P20C2 Code
Diagnosing the P20C2 code involves several steps:
- Utilize an OBD-II scanner to confirm the P20C2 code and check for any related codes.
- Inspect the wiring and connectors related to the reductant heater for signs of damage or corrosion.
- Test the functionality of the Reductant Heater and Glow Plug Control Module.
- Check the DEF level and quality.
Common Repairs for the P20C2 Code
Common repairs that may resolve the P20C2 code include:
- Replacing a faulty Reductant Tank Heater
- Repairing or replacing damaged wiring or connectors
- Replacing the Glow Plug Control Module if defective
How Much Does It Cost to Fix the P20C2 Code?
The cost of repairing the P20C2 code can vary significantly based on the underlying issue. On average, repairs can range from $150 to $800, depending on parts and labor involved.
Can I Fix the P20C2 Code Myself?
While some diagnostic steps can be performed by an experienced DIYer, the complexity of the components involved usually requires professional expertise. If you are not familiar with automotive electrical systems, it is advisable to seek professional assistance to ensure proper diagnosis and repair.
