What Does P200D Mean?
DTC P200D indicates the diesel particulate filter (DPF) on bank 2 has exceeded its maximum safe operating temperature. This is the bank 2 counterpart to P200C and applies to vehicles with dual-bank exhaust systems such as V-configuration diesel engines. The ECM has detected that the DPF temperature on bank 2 has risen above the calibrated safety threshold during regeneration or normal operation.
Safety Warning
Significant safety concern. Over-temperature conditions in the DPF can cause catalytic substrate damage, potential fire hazard, and exhaust system component warping. Prompt inspection is strongly advised.
Common Causes
30%
Excessive soot accumulation in bank 2 DPF requiring extreme regeneration temperatures
25%
Leaking fuel injector on a bank 2 cylinder introducing raw fuel into the exhaust
20%
Faulty bank 2 exhaust gas temperature sensor reading incorrectly
15%
Damaged DPF substrate on bank 2 from previous thermal event
10%
Clogged or failed bank 2 DPF differential pressure sensor hoses
Diagnostic Steps
1
Review freeze frame data and compare bank 2 EGT sensor readings with bank 1 to determine if the over-temperature is genuine or a sensor error.
2
Check bank 2 DPF soot loading percentage and ash loading via scan tool diagnostics.
3
Inspect bank 2 fuel injectors for proper spray pattern and seal integrity; a leaking injector dumps raw fuel into the exhaust.
4
Verify the bank 2 DPF differential pressure sensor and hoses are clear and reading accurately.
5
Inspect the DPF substrate on bank 2 for signs of thermal damage, melting, or partial collapse.
6
Cross-compare both EGT sensors at ambient (key on, engine off) to verify sensor accuracy.
Estimated Repair Cost
$200 - $3,500
Parts + labor, varies by vehicle and location
DTC P200D indicates the diesel particulate filter (DPF) on bank 2 has exceeded its maximum safe operating temperature. This is the bank 2 counterpart to P200C and applies to vehicles with dual-bank exhaust systems such as V-configuration diesel engines. The ECM has detected that the DPF temperature ...
The most common cause of P200D (Diesel Particulate Filter Over Temperature Bank 2) is: Excessive soot accumulation in bank 2 DPF requiring extreme regeneration temperatures
Typical repair costs for P200D range from $200 to $3,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Significant safety concern. Over-temperature conditions in the DPF can cause catalytic substrate damage, potential fire hazard, and exhaust system component warping. Prompt inspection is strongly advised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P200D to identify the root cause.
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Quick Info
Category
Powertrain
System
Exhaust / Emissions (Diesel Aftertreatment)
Difficulty
Type
Generic (SAE)
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