Chassis, generic

C0241 ABS Warning Lamp Control Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

None of the reachable J2012 tables contain C0241, and a warning lamp meaning is documented nowhere. GM's PIP5094 keyword list includes the number; AA1Car's table of GM ABS codes names it EBCM Control Valve Circuit. Saab used it in the TC/ABS 5.3 system of the first 9-5 model year, 1998, for a bad engine torque limitation signal: if the Trionic engine module has a torque control fault, a break in that line or the brake module carries the wrong engine variant, the engine side sends a fixed 96 percent pulse ratio and traction control shuts down with the TCS OFF lamp lit. The lamp in the title is required by FMVSS 135, which demands a brake warning indicator for any electrical failure of the antilock system. Check which system and maker stored the code before testing anything.

Likely causes

On Saab 9-5 (1998) open or shorted torque limitation line or throttle fault in the Trionic engine module
On GM vehicles fault in a control valve circuit driven by the brake module
Brake module programmed for the wrong engine variant

Symptoms

  • TCS OFF or ABS warning lamp on
  • Traction control not working
  • Check engine lamp on at the same time when the engine module is the source (Saab)

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€30–600
Time0.5–2.5 h

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

Parts involved

abs warning lampinstrument clusterabs control moduleengine control module

Related codes

C0244C0242P0856

References: saabwisonline.com, aa1car.com, static.nhtsa.gov, law.cornell.edu.