Chassis, generic

C0076 PWM for Traction Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Covers the pulse-width-modulated signal used within the traction control interface, for example a PWM torque-request or status line exchanged between the stability and powertrain controllers or driving a traction-related actuator. The module monitors the PWM signal's duty cycle, frequency and presence and sets this code when it is missing, out of range or implausible. Traction-control patents describe the controller commanding torque reduction and actuators through defined signal interfaces; a corrupted PWM link breaks that chain. A fault limits traction control and sets the ABS/ESC warning lamp while base braking remains, usually alongside the torque request/deliver codes. No code-specific public bulletin was confirmed; the entry follows the SAE J2012 generic definition and traction-control signalling design.

Likely causes

PWM signal missing or out of range
Open or shorted signal line
Sending or receiving module fault

Symptoms

  • Traction control limited
  • ABS/ESC warning lamp on
  • Appears with torque request DTCs

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–800
Time0.5–3 h

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

Parts involved

tcs moduleecm

Related codes

C0073C0074C0084

References: patents.google.com, en.wikipedia.org.