P202C Audi Code - Reductant Tank Heater Control Circuit High
Quick Answer
Check the tank connections, and power and grounds to the Reduction Agent Tank Module. Common causes include Faulty Reductant Tank Heater, Reductant Tank Heater harness is open or shorted, Reductant Tank Heater circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P202C Audi indicates Reductant Tank Heater Control Circuit High.
- Common causes
- Common causes include Faulty Reductant Tank Heater, Reductant Tank Heater harness is open or shorted, Reductant Tank Heater circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P202C Audi Description
What are the Possible Causes of the DTC P202C Audi?
- Faulty Reductant Tank Heater
- Reductant Tank Heater harness is open or shorted
- Reductant Tank Heater circuit poor electrical connection
How to Fix the DTC P202C Audi?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P202C Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P202C Audi Code
1. What does the OBDII code P202C mean on an Audi?
P202C indicates a fault in the reductant tank heater control circuit, specifically a high voltage condition, which can affect the proper heating of the DEF (Diesel Exhaust Fluid) tank.
2. What are the common symptoms of the P202C code in an Audi?
Symptoms may include the Check Engine Light turning on, issues with DEF system performance, a reduction in engine power, or difficulty starting the vehicle in cold weather.
3. What causes the P202C code to be triggered in an Audi?
Common causes include a faulty reductant tank heater, damaged wiring or connectors in the heater circuit, or a malfunctioning control module.
4. Can I drive my Audi with the P202C code?
While the vehicle may still be drivable, ignoring this code could lead to issues with emissions compliance and potential long-term damage to the DEF system.
5. How is the P202C code diagnosed in an Audi?
A technician will typically use a scan tool to confirm the code, inspect the DEF tank heater and its wiring, and test the circuit for high voltage or resistance issues.
6. What repairs are needed to fix the P202C code in an Audi?
Repairs might include replacing the reductant tank heater, repairing or replacing damaged wiring or connectors, or reprogramming the control module if necessary.
7. How much does it cost to fix the P202C code in an Audi?
The repair cost varies but typically ranges from $200 to $600, depending on whether the issue is with the heater itself, wiring, or the control module.
8. Can a faulty reductant tank heater damage other parts of my Audi?
If left unrepaired, a faulty heater can lead to DEF freezing in cold weather, potentially causing further damage to the SCR (Selective Catalytic Reduction) system.
9. What tools are required to troubleshoot the P202C code in an Audi?
Diagnosing this code may require a professional scan tool, a multimeter for electrical testing, and possibly a wiring diagram for the reductant heater system.
10. Is the P202C code specific to Audi vehicles?
No, the P202C code is a generic OBDII code, but its implementation and specific symptoms may vary depending on the make and model, including Audi.
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