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C0014 — Right Front Inlet Control

Generic OBD-II · all makesChassis

Code C0014 indicates a malfunction in the right front inlet valve control circuit of the ABS hydraulic modulator. This valve regulates brake fluid pressure to the right front wheel during anti-lock braking events. The code sets when the ABS control module detects an electrical or mechanical fault in that specific circuit.

Symptoms

What causes it — most likely first

1. Faulty ABS hydraulic modulator assembly

Internal failure of the right front inlet valve, such as a stuck or leaking valve, is the most common cause. The entire hydraulic unit often requires replacement.

2. Damaged wiring or connectors in the valve control circuit

Chafed, broken, or corroded wires between the ABS module and the hydraulic unit can cause open or short circuits, triggering the code.

3. Defective right front inlet valve solenoid

The solenoid coil may have an open or shorted winding, leading to improper valve operation. This is typically part of the hydraulic modulator assembly.

4. Loose or corroded electrical connections at the ABS module

Poor contact at the module connector can cause intermittent circuit faults. Inspect and clean connector pins.

5. Faulty ABS control module

In rare cases, the module itself may fail to properly control the valve circuit. This should only be considered after all other causes are ruled out.

How it's diagnosed

  1. Use a scan tool to retrieve all stored codes and freeze frame data. Note any other ABS codes that may be present.
  2. Visually inspect the wiring harness and connectors at the ABS hydraulic unit for damage, corrosion, or loose connections.
  3. Measure the resistance of the right front inlet valve solenoid using a digital multimeter. Compare to manufacturer specifications.
  4. Check the valve control circuit for shorts to ground, shorts to voltage, or open circuits between the ABS module and the hydraulic unit.
  5. If electrical tests pass, suspect an internal mechanical fault in the hydraulic modulator assembly. Perform a functional test if possible.
  6. As a last resort, consider replacing the ABS control module only after confirming all other components and circuits are fault-free.

Code facts & related codes

SystemChassis
StandardizationSAE generic — identical on every make

Frequently asked

Can I drive with a C0014 code?

Driving is possible but not recommended, as the ABS system may be disabled, increasing the risk of wheel lockup during hard braking.

Does this code mean I need to replace the entire ABS pump?

Often yes, because the inlet valve is integrated into the hydraulic modulator assembly. Replacing just the valve is usually not possible.

Could a bad wheel speed sensor cause this code?

No, this code is specific to the right front inlet valve control circuit. A faulty wheel speed sensor would set a different code.

Is the ABS module the most likely cause?

No, the ABS module is rarely the culprit. The hydraulic unit or wiring is far more likely. Only replace the module after thorough testing eliminates other causes.