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.
Pinpoint Test Bx: PSCM (Power Steering Control Module) DTC (Diagnostic Trouble Code) U0452:00 Invalid Data Received From Restraints Control Module
The module reporting this DTC is not the problem module.
Refer to Wiring Diagrams POWER STEERING CONTROLS for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Power Steering - System Operation and Component Description .
Description
- The PSCM monitors the HS-CAN when the ignition is ON for more than 5 seconds, the voltage to the PSCM is greater than 10 volts and there are no Diagnostic Trouble Codes (DTCs) present inhibiting PSCM operation.
Diagnostic Aids
- For additional information on the messages sent to the PSCM from the RCM module, refer to the Network Message List in DESCRIPTION AND OPERATION .
- DTC U0452:00 indicates a yaw rate signal message concern. The module reporting this DTC is not the problem module. Do not install a new EPAS assembly if this DTC is set.
- The presence of DTC U0452:00 prevents the Lane Centering Assist (LCA) feature from activating (if equipped). If set during a lane centering assist event, the event is terminated and the lane centering assist system is deactivated.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| PSCM U0452:00 | Invalid Data Received From Restraints Control Module: No Sub Type Information | This DTC is set if the PSCM receives an "fault" or "unknown" message from the RCM instead of valid information. |
Possible Sources
- Wiring, terminals or connectors
- HS-CAN concern
- RCM
Pinpoint Tests BX: PSCM DTC U0452 Invalid Data Received From The RCM
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.