C0498Lateral Acceleration Sensor Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C0498 is in none of the accessible J2012 lists. GM does use the number: bulletin PIP5094, a terminal-test reminder for GM cars and light trucks of 2014 and earlier, names C0498 and C0499 among many chassis codes, but without any wording, so GM's meaning stays undocumented and a lateral accelerometer fault is not confirmed; the established code with this title is C0186. The part itself is a capacitive sensor whose middle plate swings between two fixed plates under sideways force. On the Saab 9-5 it puts out 0–5 V, about 2.6 V straight ahead, and the ESP module recognises a broken wire or one shorted to ground or battery. A GM EBCM shows the same signal as 0–5 V. Losing it takes away a key ESC input.
- What you may notice
- Stability control unavailable, ESC lamp depending on the make
- Lateral acceleration reads a fixed value on the scan tool
- Likely causes
- LikelyOpen circuit or short in the signal, reference or ground wire
- PossibleLoose or corroded connector at the sensor cluster
- PossibleLateral acceleration sensor defective
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.