Chassis, generic

C0069 Yaw Rate/Longitude Sensors

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0069 is a plausibility code for the yaw rate and longitudinal acceleration sensors taken together. When the vehicle brakes in a bend, yaw, longitudinal and lateral motion must stay in a physical relationship; if the two signals keep contradicting each other or the rest of the inertial set, one channel has drifted, both share a fault, or the cluster has shifted on its mount. NHTSA's brake safety study lists yaw rate and longitudinal acceleration as inputs of the stability module and notes that several vehicle dynamics sensors are often combined in one unit, which is what makes such cross-checks possible. The module stores C0069, switches off stability and related functions and lights the ESC lamp; base braking remains. No manufacturer documents this code publicly.

Likely causes

One inertial channel drifted or biased
Sensor cluster shifted on its mount
Shared harness or connector fault

Symptoms

  • Stability control disabled
  • ABS/ESC warning lamp on
  • Inertial signals implausible together

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€120–1,000
Time0.6–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

yaw long sensor cluster

Related codes

C0063C0062C006A

References: rosap.ntl.bts.gov, bosch-mobility.com, patents.google.com, patents.google.com.