C006A: Multi-axis Acceleration Sensor (Subfault)

What it means

This code identifies a fault associated with the multi-axis acceleration sensor. The specific failure depends on the diagnostic subtype.

At a glance

• Usually lights the ABS or stability-control warning light
• The engine or gearbox may go into limp mode

How it works

A multi-axis acceleration sensor measures vehicle movement in more than one direction so the stability system can compare actual motion with the driver's steering input. This subfault code identifies a problem associated with that sensor, while its diagnostic subtype specifies the particular failure.

Common causes

Most likely first.

1. Sensor failed

Symptoms

• ABS or stability-control warning light
• Stability control may be limited or disabled

How to diagnose it

1. Retrieve the stability-control module's subtype, related codes, and freeze-frame data to determine which acceleration-sensor axis or condition is implicated.
2. View live multi-axis acceleration readings with the vehicle stationary and check that they are plausible and stable.
3. Inspect the sensor and its connector for secure mounting, corrosion, loose terminals, or damaged wiring.
4. Check the sensor's power, ground, and signal circuits against the manufacturer's wiring information and specifications.
5. If mounting and circuits check out, perform the subtype-specific sensor test before deciding whether the sensor has failed.

Common fixes

• Reconnect and secure the multi-axis sensor connector.
• Repair damaged wiring or poor ground connections at the sensor.
• Correct sensor mounting if it has shifted and the manufacturer's procedure requires alignment.
• Replace the multi-axis acceleration sensor if testing confirms an internal fault.

Can I keep driving?

Stability control may be limited or disabled, so the vehicle may offer less help correcting a skid. Drive smoothly, avoid abrupt manoeuvres and poor-traction conditions, and arrange diagnosis soon.