Invalid Data Received From Cruise Control Module
What does U0405 mean?
The U0405 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Cruise Control Module. This is a moderate severity code.
Common Symptoms
- Cruise control surging or hunting speed
- Cruise control disengages unexpectedly
- Speed not holding at set point
- Adaptive cruise following distance erratic
- Cruise control warning light on
Probable Causes (Ranked by Likelihood)
- Cruise control module receiving corrupted speed data Very High
- Vehicle speed sensor signal intermittent High
- Brake switch sending erratic signals Moderate
- Throttle position sensor data inconsistency Moderate
Step-by-Step Diagnostic Procedure
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Monitor vehicle speed sensor data for dropouts or spikes
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Check brake light switch adjustment and operation
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Verify throttle position sensor readings are smooth
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Inspect wiring to the cruise control module
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Check for related speed sensor or throttle codes
Frequently Asked Questions
Can I drive with code U0405?
Yes, but avoid using cruise control until repaired. Drive manually to maintain safe speed control.
What causes U0405?
Most often caused by a failing vehicle speed sensor or an incorrectly adjusted brake light switch that sends intermittent signals to the cruise module.
Is U0405 expensive to fix?
Usually $100 to $400. Brake switch adjustment or replacement is inexpensive. Speed sensor replacement costs more depending on location.