VOLVO
ABS-0030 - Left rear wheel sensor. Signal missing. Intermittent fault
System
Bremsesystem (ABS)
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Gjelder følgende modeller:
5 modellerC70 Cabriolet (1998–2005), C70 Coupé (1998–2002), S70 (1997–2000), V70 (1997–2000), V70 XC (1998–2000)
Hva betyr feilkoden?
The ABS control module has at times lost the signal from the wheel speed sensor on the left rear wheel. The fault is intermittent, meaning it is sporadic and may not be present right now. It is often caused by a temporary poor contact or a cable break that only shows when the car is moving. The equivalent code for the right rear wheel is ABS-0040.
Mulige årsaker
- Poor contact in the connections at the sensor or the module
- Open circuit or short to ground or supply voltage in the sensor supply
- Signal wires briefly shorted to each other
- Open circuit in the signal wire that only appears when the cable moves
- Faulty wheel speed sensor or, less commonly, a faulty ABS control module
Hva du kan gjøre
- 1Read the code, clear it and road test to see whether the fault returns
- 2Check the connector at the left rear wheel sensor for looseness, moisture and corrosion
- 3Check the connector at the module and the wiring between the module and the sensor for intermittent open circuits
- 4Follow the cable from the sensor and look for chafing and pinched sections, especially at moving parts
- 5If the fault remains or returns often, have a workshop with diagnostic equipment check the wiring
- 6ABS is safety-critical – avoid hard braking until the fault is fixed and do not let anyone unqualified work on the brake system
Symptomer du kan merke4
- ABS and traction control warning lamps lit
- Brake system warning lamp lit
- ABS and traction control do not work
- The ABS warning lamp may only go out some way into the next drive
Hva feilen kan påvirke2
- ABS and traction control are blocked
- Brake force distribution is disabled if two or more sensors stop working
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