Invalid Data Received From Body Control Module
What does U0426 mean?
The U0426 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Body Control Module. This is a low severity code.
Common Symptoms
- Minor electrical malfunctions
- Intermittent feature operation
- Possible warning light
- Body control features work inconsistently
Probable Causes (Ranked by Likelihood)
- BCM sending corrupted data Very High
- CAN bus noise affecting BCM communication High
- BCM software issue Moderate
- Aftermarket accessory interference Low
Step-by-Step Diagnostic Procedure
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Check for BCM-specific codes
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Inspect CAN bus wiring near BCM for damage
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Check for aftermarket accessories connected to BCM circuits
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Attempt BCM reflash with latest calibration
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Replace BCM if data corruption persists after reflash
Frequently Asked Questions
Can I drive with code U0426?
Yes, you can drive. Lost communication codes indicate a module has stopped communicating on the vehicle network. The affected system may not function correctly.
What causes U0426?
The most common cause is a failed module or a wiring issue in the CAN bus network. BCM sending corrupted data is the most likely cause. Power supply, ground, and connector issues should be checked before replacing any module.
Is U0426 expensive to fix?
Repair costs range from $100 - $800 (parts and labor). Wiring repairs are on the lower end, while module replacement is on the higher end. The module may also need to be programmed after replacement.