Chassis, generic

C0287 Longitudinal Acceleration Sensor Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

The publicly available J2012 lists do not contain C0287, and no maker uses it for an ESP Performance fault. In later GM brake systems the number belongs to the longitudinal acceleration sensor: the Saab 9-5 of 2010 and 2011 and the 2011 Saab 9-4X file it under the multi-axis sensor that also delivers lateral acceleration and yaw rate over CAN. It sets when that signal is missing, disagrees with the speed change of the car or has an offset outside its window; subcode 4B marks a calibration never learned, 71 invalid data. Only hill start assist is switched off. GM bulletins PI1525 (2014–15 Regal, Malibu, Sonic) and PIT5427 (2010–15 Equinox and Terrain, corroded connector X411) list it with C0186 and C0196. Older GM tables used the number otherwise.

Likely causes

Multi-axis sensor replaced or disturbed without setup and yaw sensor learn
Corroded or loose connector in the sensor supply or CAN lines
Faulty multi-axis sensor or outdated software in the module hosting it

Symptoms

  • Hill start assist not available
  • Stability control or airbag warning lamp on when stored together with C0186 or C0196

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–600
Time0.5–2 h

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

Parts involved

longitudinal accel sensormulti axis accel sensorbrake control module

Related codes

C0186C0196C0288

References: saabwisonline.com, saabwisonline.com, saabwisonline.com, saabwisonline.com.