This diagnostic trouble code indicates the ABS control module detects a voltage signal from the right rear wheel speed sensor that is below the expected operating range. This condition typically suggests an electrical fault such as a short to ground, a broken wire, or an internal sensor failure. The ABS system will usually disable anti-lock functions until the fault is resolved.
Internal electrical failure within the sensor unit causes a low voltage signal.
Wires near the wheel may be chafed, melted, or shorted to ground due to heat or movement.
Moisture or debris at the sensor plug creates high resistance or poor contact.
Missing teeth or cracks on the reluctor ring prevent proper signal generation.
A corroded ground strap for the ABS system can cause low voltage readings.
Rare internal fault within the module itself; only considered after all external circuits are verified.
No, external sensors and wiring fail much more frequently than the control module.
The vehicle will brake normally, but anti-lock and traction features will not function during emergency maneuvers.
Yes, excessive wheel bearing play can alter the sensor gap and cause erratic signals.
No, module replacement is rarely required unless all wiring and sensor tests pass.