Code Definition

C047A — Electric Steering Motor Position Sensor Circuit Malfunction

System: Chassis  |  Type: Generic (OBD-II Standard)  |  Make: Holden

About C047A

C047A is a generic (obd-ii standard) 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.

When C047A is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

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.

Because C047A is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Electric Power Steering (EPS) control module monitors the steering motor position sensor, often a resolver or hall effect device, to determine motor rotor position for precise control of steering assist. DTC C047A is set when the module detects an implausible position signal, loss of signal, or a circuit fault such as an open circuit, short to ground, or short to battery for a calibrated period. Accurate rotor position is essential for the module to commutate the motor correctly. When this code is set, power steering assist is usually reduced or lost completely so the steering feels heavy,...

Join TaT to view the complete code information and diagnostic details.

Quick Facts