DPF Over Temperature Bank 2
The P200D code indicates that the Diesel Particulate Filter (DPF) on Bank 2 has exceeded its maximum allowable temperature, typically due to excessive soot loading or a failed regeneration process. This can cause thermal damage to the DPF and surrounding components, leading to reduced exhaust flow and potential engine performance issues.
01. Most Common Causes
- Failed DPF regeneration (incomplete or excessive)
- Excessive soot accumulation due to short trips or low load driving
- Faulty exhaust gas temperature sensor
- Engine misfire or fuel injector leak causing unburned fuel
- Restricted exhaust system or damaged DPF
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Excessive exhaust smoke (black or white)
- Increased fuel consumption
- Burning smell from exhaust
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect exhaust system for leaks, damage, or restrictions.
Step 3: Check DPF pressure and temperature sensor readings with a scan tool.
Step 4: Perform a forced DPF regeneration if safe, monitoring temperatures.
Step 5: Inspect fuel injectors and ignition system for misfires.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, continued driving can cause severe DPF damage and potential fire hazard. Have the vehicle inspected immediately.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repairs can range from $200 for sensor replacement to $2,000+ for DPF replacement.