Code Definition

C1531 — Motor Lock Protection Active

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Holden

About C1531

C1531 is a manufacturer-specific chassis diagnostic trouble code recorded for Holden vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1531 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Electronic Power Steering (EPS) control module monitors steering motor current, speed, and position to detect abnormal resistance or stall conditions. DTC C1531 is set when the module determines that the steering motor is locked, stalled, or experiencing excessive load, which causes the motor lock protection function to activate. The protection disables or limits steering assist to prevent damage to the motor and electronics. As a result the driver usually notices heavy or uneven steering effort along with an illuminated power steering warning lamp. The condition can stem from a genuine me...

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