C123F fault code: what it means

C123F: Steering angle sensor comparative performance (JK Wrangler). Covered by the clockspring/SAS bulletin; ESC may switch off.

Chassis (brakes, steering, suspension) · Costly if missed

Usual causes, most likely first

clockspring/steering angle sensor
SAS calibration
wheel alignment off-centre

C123F by make

Jeep

Steering angle sensor comparative performance (JK Wrangler). Covered by the clockspring/SAS bulletin; ESC may switch off.

Usual causes: clockspring/steering angle sensor; SAS calibration; wheel alignment off-centre

What the repair usually costs

Wheel alignment (car / 2WD)NZ$100–NZ$230 · A$100–A$210
Wheel alignment (4WD / SUV / ute)NZ$130–NZ$330 · A$120–A$390

Not sure what C123F means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.