OBD Codes List

Diagnostic reference · C1201

C1201

ABS Inlet Valve Coil LF Circuit Short To Ground

System
Chassis control (C code)
Lamp
ABS Light
Category
Chassis

What it means

C1201 means ABS Inlet Valve Coil LF Circuit Short To Ground.

Where it lives

For C1201, the valve sits on the circuit this code reports. The description of C1201 reports the valve as shorted.

Check these first

  • A short to ground in the left front ABS inlet valve coil circuit
  • A failed left front ABS inlet valve coil
  • A poor electrical connection at the inlet valve connector
  • A failed anti-lock brake control module

What to do next

  1. Read the left front inlet valve status on a scan tool
  2. Inspect the left front inlet valve connector and wiring
  3. Test the inlet valve coil for a short to ground
  4. Compare the coil resistance against a known value
  5. Replace the ABS hydraulic control unit or valve if the coil tests bad
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.