Invalid Data Received From Diesel Particulate Filter Module
The U0474 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Diesel Particulate Filter Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $400 - $2,500 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- DPF warning light on
- Frequent regeneration cycles
- Reduced engine power
- Exhaust smell
- DPF soot level reading incorrect
Probable Causes (Ranked by Likelihood)
- DPF pressure sensor bad data Very High
- DPF clogged beyond normal High
- CAN bus data error Moderate
- DPF temperature sensor fault Low
Step-by-Step Diagnostic Procedure
-
Check DPF pressure differential
-
Scan DPF module for codes
-
Test DPF temperature sensors
-
Attempt forced regeneration
Frequently Asked Questions
Can I drive with U0474?
Short distances. Complete a highway driving cycle to attempt regeneration.
What causes U0474?
Usually a failed pressure or temperature sensor. Excessive short trips can also clog the DPF.
How much to fix?
Between $400 and $2,500. DPF replacement is very expensive.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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