Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Code P1573, Traction CNTRL Fault Loss Of Abs/TCS Serial Data: Notes
PCM uses the serial data line to communicate with various other components and systems within vehicle. If PCM does not receive data from Electronic Brake and Traction Control Module (EBTCM), PCM will store Code P1573 indicating loss of communication with ABS/TCS system. Code P1573 will set when the following conditions are present.
- Code P1630 is not set.
- PCM has detected communication error for .5 second.
When Code P1573 is set, PCM will not be able to communicate with EBTCM. This will cause EBTCM to set to set ABS DTC 76, disable traction control, and illuminate TRACTION OFF indicator. P1573 does not illuminate the Malfunction Indicator Light (MIL).
- Checks if EBTCM is able to transmit data and ensures serial data circuit to EBTCM is not open.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.