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.
Diagnostic Trouble Code (DTC) Information
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information
Condition
Note! The diagnostic trouble code (DTC) applies only to cars with dynamic stability and traction control (DSTC).
The active yaw control sensor is supplied with 12 V. The signal voltage of the sensors to the brake control module (BCM) is approximately 2.5 V for a stationary car. The control module compares the voltage with a reference value.
Diagnostic trouble code (DTC) BCM-0123 is stored if the voltage is outside the reference value or if an internal fault in the active yaw control sensor is registered.
Substitute value
- Traction control is blocked
- Stability control is blocked
- Active yaw control is blocked.
Hint: For information about abbreviations, see Brake system, abbreviations Brake System, Abbreviations.
Possible source
- Signals which disrupt the active yaw control sensor
- Voltage to the active yaw control sensor is too low
- Internal fault in the active yaw control sensor.
Fault symptom[s]
- The anti-spin warning lamp is lit (up to and including 2002 model year)
- General yellow warning lamp lit (from model year 2003 inclusive)
- Anti-spin does not function
- The stability control system does not function
- The traction control system does not function.
RENDER: 1.0x
NO RELATED
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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.