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.
A025 - Excessive Left Front Wheel Acceleration
Wheel sensors produce AC voltage signal as magnetic teeth pass coil. AC voltage created enables EBCM to determine wheel RPM. EBCM compares individual wheel acceleration or deceleration beyond specified limits. Code A025 will disable ABS function and turn ABS warning light on.
- This step determines if fault is currently present.
- This step checks for apparent physical damage that may cause code to set.
- This step determines if sensor internal resistance is correct.
- This step verifies sensor can generate an output signal.
- This step determines if sensor is shorted to ground.
- This step checks for voltage at sensor harness connector.
- This step verifies sensor is not internally shorted.
- This step checks for open in wheel speed signal low circuit.
- This step checks for open in wheel speed signal high circuit.
- This step checks for short to ground in both wheel speed signal high and low circuits.
- This step ensures Code A025 is not caused by poor connections between EBCM and connector.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.