C051EMulti-axis Acceleration Sensor Module A Intermittent/Erratic
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Module A's data arrive, but values jump, freeze briefly or vanish for short moments instead of changing smoothly. Modern units digitise yaw rate and accelerations inside the module and pass them on over a serial link: Bosch's SMI810 uses SafeSPI with 16-bit data, and a Hyundai/Kia design checks each value against the sensor's measuring range before sending it over CAN to the stability controller. Loose plugs, vibration or supply dips can therefore show up as erratic samples. No manufacturer publishes C051E, so limits are unknown. The intermittent label separates it from a steady implausible value (C051C) and from a disagreement with other signals (C051F). The ESC lamp may come and go between drives.
- What you may notice
- ESC warning lamp comes and goes
- Stability control occasionally unavailable
- Jumping yaw or acceleration values in live data
- Likely causes
- LikelyLoose or corroded connector at module A
- PossibleBrief supply or ground dropouts, weak battery
- PossibleModule not firmly fastened, picks up vibration
- RareSporadic internal fault of the sensor electronics
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.