U0442
Invalid Data Received From ECM/PCM B
U0442 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From ECM/PCM B. Common causes: damage to the wiring harness between modules, corroded or oxidized connectors. Estimated repair cost: $56–389.
Symptoms
- Unstable engine operation
- Power Loss
- Check Engine Light Illuminates
- Gear shifting problems
- Decreased fuel efficiency
Causes
- Damage to the wiring harness between modules
- Corroded or oxidized connectors
- ECM/PCM malfunction
- Grounding problems
- Control unit software error
How to Fix
- Check the integrity of the wiring between the modules
- Inspect connectors for corrosion
- Check ECM/PCM grounding
- Flash or replace the control unit
- Carry out CAN bus diagnostics
Related codes
Error U0442 by Vehicle Brand
FAQ
What does the U0442 code mean?
U0442 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From ECM/PCM B
What causes a U0442 error code?
The most common causes of U0442 include: Damage to the wiring harness between modules; Corroded or oxidized connectors; ECM/PCM malfunction; Grounding problems.
How do I fix a U0442 diagnostic trouble code?
To fix U0442: Check the integrity of the wiring between the modules. Inspect connectors for corrosion. Check ECM/PCM grounding. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0442?
Yes, but get it checked soon
How much does it cost to fix U0442?
The estimated repair cost for U0442 is $56–389. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat