Diesel Particulate Filter Over Temperature Bank 1
The P200C code indicates that the diesel particulate filter (DPF) in Bank 1 has exceeded its maximum allowable temperature, typically due to excessive soot loading or improper regeneration. This can lead to DPF damage or failure if not addressed promptly.
01. Most Common Causes
- Excessive soot accumulation in DPF
- Faulty exhaust gas temperature sensor
- Malfunctioning DPF regeneration system
- Engine misfire or fuel injector issue
- Restricted exhaust or turbocharger problem
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance
- Excessive exhaust smoke
- Increased fuel consumption
- Possible limp mode activation
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data
Step 2: Inspect DPF and exhaust system for physical damage or restrictions
Step 3: Check exhaust gas temperature sensor readings and compare to specifications
Step 4: Perform a forced DPF regeneration and monitor temperature
Step 5: Inspect fuel injectors and engine for misfire or over-fueling
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as high DPF temperatures can cause a fire hazard or permanent damage to the exhaust system.
How much does it cost to fix?▼
Costs vary widely depending on the root cause, ranging from $200 for a sensor replacement to $800 or more for DPF replacement or major repairs.