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OBD Code C1205

ABS Outlet Valve Coil Rear Circuit Short To Ground

CodeC1205
DescriptionABS Outlet Valve Coil Rear Circuit Short To Ground
SystemChassis

What Does C1205 Mean?

ABS Outlet Valve Coil Rear Circuit Short To Ground. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the chassis.

Code Breakdown

C = Chassis code

1 = Manufacturer-specific

How to Fix C1205

Follow these diagnostic steps to identify and resolve the issue. Always start with the simplest checks before moving to more involved repairs.

  1. Check ABS wheel speed sensor wiring and connectors at all four wheels.
  2. Inspect tone rings (reluctor rings) behind each wheel hub for damage, rust, or missing teeth.
  3. Clean ABS sensors of any debris or rust.
  4. Test each wheel speed sensor resistance with a multimeter.
  5. Check the ABS fuse and relay.
  6. If the ABS module is indicated, it may need professional diagnosis or replacement.
  7. Clear codes and test drive, monitoring ABS operation during controlled braking.

Note: These are general diagnostic guidelines. Some vehicles may have model-specific procedures. Always consult your vehicle's service manual for exact specifications and torque values. If you are not comfortable performing these steps, visit a qualified mechanic.

Frequently Asked Questions

Is C1205 serious?

Yes — C1205 is considered a critical-severity code. You should have it diagnosed and repaired as soon as possible. Driving with this code active may cause further damage to your vehicle or pose a safety risk.

Can I clear C1205 myself?

You can clear any OBD-II code with a code scanner or by disconnecting the battery for 15-30 minutes. However, clearing the code without fixing the underlying problem will cause it to return — usually within one or two drive cycles. If the code triggered the check engine light, the light will come back on. Fix the root cause first, then clear the code.

How much does it cost to fix C1205?

Repair costs vary widely depending on the root cause. Some fixes are free (like tightening a gas cap) while others can cost several hundred dollars (like replacing a catalytic converter or oxygen sensor). A proper diagnosis with a professional scan tool — not just reading the code — is the first step to getting an accurate repair estimate. Many auto parts stores offer free code reading, but a thorough diagnosis usually requires a mechanic.

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