DI_a198 — Vdc Esp MC Press And Steering

Full alert identifier: DI_a198_vdcEspMCPressAndSteering

Alert description

The Drive Inverter (DI) is not receiving proper brake master cylinder pressure or steering angle signals from the Electronic Stability Program (ESP) and/or Electric Power Assisted Steering (EPAS).

Potential impact

Traction control and stability control may be degraded due to this error. The vehicle should be driven with increased caution if these systems are degraded.

Set condition

Brake master cylinder pressure from ESP and/or steering angle from EPAS are either not received by the DI or considered implausible. Alert log signal data should provide more information on specific condition(s) involved.

Clear condition

If this alert is set due to a log signal rate or freeze check, it will clear on the next drive cycle. If the alert is set due to CAN issues it will clear on the drive cycle after the CAN issues have been resolved.

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
MC Press Curr Value `DI_a198_MCPressCurrValue`	bar
MC Pressure Last Value `DI_a198_MCPressureLastValue`	bar
Steering Angle Curr Val `DI_a198_steeringAngleCurrVal`	deg
Steering Angle Last Val `DI_a198_steeringAngleLastVal`	deg

Signal	Unit
MC Pressure `DI_a198_MCPressure` 0 VALID 1 RANGE 2 FREEZE 3 RATE 4 QF 5 CAN 6 QF VALIDITY 7 TEMP QF INVALID	—
Steering Angle `DI_a198_steeringAngle` 0 VALID 1 RANGE 2 FREEZE 3 RATE 4 QF 5 CAN 6 QF VALIDITY 7 TEMP QF INVALID	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DI_a198.