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.
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HOMESERVICE MANUALSAUDI1996A4 BASE, STANDARDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM/TRACTION CONTROLDTC TESTINGDTC 00597 - VARYING WHEEL SPEED IMPULSE
1996 Audi A4 Base, Standard
DTC 00597 - Varying Wheel Speed Impulse
1996 Audi A4 Base, StandardSECTION DTC 00597 - Varying Wheel Speed Impulse
- Fault may be caused by the following;
- Wheel speed sensor or speed sensor rotor is dirty or damaged.
- Wheel speed sensor not properly installed.
- Excessive wheel bearing play.
- Wheels and/or tires not all same size.
- Perform a visual check on the above items. If inspection is inconclusive, perform steps 7) through 10) of CIRCUIT TEST .
- Check wheel speed sensor function. Using VAG 1551 scan tool, select function 08 - READ MEASURING VALUE BLOCK. Select DISPLAY GROUP 001. Drive vehicle to ensure all wheel speeds are within one km/h difference of each other. Raise and support vehicle. Check wheel speed value while rotating each wheel one at a time.
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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.