OBD code C1237: Primary pressure sensor signal?

2013 KIA OPTIMA K5

175,000 MILES • 2.0L • 4 CYL • AUTOMATIC

AYMEN

MEMBER
1 POST

Suddenly I have a notice on my display, check brakes! The car was suddenly stopped, maximum speed is 20, and when I push brakes I hear like crashing sound, and brake pad takes long time to stop the car. Turned off the car, then started normally. OBD code was C1237: Primary pressure sensor signal
Any idea? Does the ABS AHB work good?

May 19, 2023 at 1:43 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

This is what is said about the code C1237:

The C1237 code Electronic Brake Control Module (EBCM)

If the wiring is good, I would replace the ABS controller which I have included instructions for in the images below. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to enlarge)

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May 19, 2023 at 12:23 PM