U043DInvalid Data Received From Accelerator Pedal Module
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- U043D applies where the accelerator pedal is a networked module that sends pedal position as messages instead of two analogue voltages. The engine or vehicle controller stores it when those messages carry an implausible position, redundant values that disagree or a broken counter. No manufacturer documents U043D publicly; in the systems that are documented the pedal stays hard-wired, for instance in the BMW i4, whose bulletin B610625 blames implausible pedal sensor signals on poor pins at the CCU connector and logs them under a BMW-specific code. CARB requires rationality checks of inputs used by emission-related controls, and electronic throttle systems drop to idle or limited torque when the driver demand cannot be trusted. Expect reduced power and a warning lamp. U013C is lost contact.
- What you may notice
- Reduced power or limp-home mode
- Engine or drivetrain warning lamp on
- Pedal response delayed or ignored
- Likely causes
- PossiblePoor pin contact at the pedal module or its receiver connector
- PossibleInternal fault of the accelerator pedal module
- RarePedal module and engine controller software not matched
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.