Fix P200C: STEP-BY-STEP diagnostic GUIDE!

The P200C: Diesel Particulate Filter Over Temperature Bank 1 refers to an issue where the Diesel Particulate Filter (DPF) on Bank 1 is experiencing temperatures that are too high. This may be caused by excessive exhaust temperatures, a faulty temperature sensor, or problems with the DPF itself.

P200C – Quick Overview

CodeInformation
MeaningP200C: Diesel Particulate Filter Over Temperature Bank 1
Is it serious?Yes, excessive DPF temperatures can cause damage to the filter and potentially lead to fire hazards or further engine damage if not addressed.
Possible causes– Excessive exhaust temperatures
– Faulty temperature sensor
– Diesel particulate filter issues
How to diagnose?– Check the temperature sensor for proper operation
– Inspect the diesel particulate filter
– Verify exhaust temperatures

P200C Meaning

The P200C: Diesel Particulate Filter Over Temperature Bank 1 code indicates that the Diesel Particulate Filter on Bank 1 is operating at excessively high temperatures. High temperatures in the DPF can be due to over-fueling, improper regeneration cycles, a clogged filter, or a malfunctioning temperature sensor providing inaccurate readings.

Step-by-step diagnostic guide

ActionDescriptionTools Needed
Check for Other CodesUse an OBD-II scanner to check for additional codes related to DPF, exhaust system, or engine issues that could cause elevated exhaust temperatures.OBD-II Scanner
Test the Temperature SensorUse a multimeter or diagnostic tool to test the functionality of the DPF temperature sensor on Bank 1. Ensure it is providing accurate temperature readings.Multimeter, Diagnostic Tool
Inspect the Diesel Particulate Filter (DPF)Visually inspect the DPF for signs of excessive soot buildup or damage. A clogged or malfunctioning DPF can lead to higher temperatures during regeneration cycles.Flashlight, DPF Tester
Verify Exhaust TemperaturesUse a thermal gun or diagnostic tool to monitor exhaust gas temperatures before and after the DPF. Compare the readings with manufacturer specifications to detect any abnormal conditions.Thermal Gun, Diagnostic Tool
Check Exhaust SystemInspect the exhaust system, including sensors and piping, for any leaks, blockages, or damage that could cause abnormal exhaust temperatures or DPF overheating.Flashlight, Smoke Machine (if necessary)
Inspect DPF Regeneration SystemVerify that the DPF regeneration process is functioning correctly. If the filter is not properly regenerating, temperatures may rise excessively due to unburned soot buildup.Diagnostic Tool, Exhaust Gas Analyzer
Clear the Code and Test DriveAfter completing necessary repairs or cleaning, clear the P200C code using an OBD-II scanner. Test drive the vehicle to ensure the issue has been resolved.OBD-II Scanner, Vehicle Owner’s Manual
Recheck for CodesAfter the test drive, re-scan the vehicle to confirm that the P200C code has not returned.OBD-II Scanner

Free PDF: How to choose OBD2 scanner

buyers guide popup

I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.

✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners

PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide. 

Just tell me where to send it.

Leave a Comment