Code Definition

C1928 — VAPS Solenoid Actuator Return Circuit Short To Ground

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

About C1928

C1928 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1928 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

C1928 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 Variable Assist Power Steering (VAPS) system uses a solenoid actuator, controlled by the power steering control module, to vary steering assist with vehicle speed. The solenoid return circuit provides the controlled return path that completes the actuator current loop. DTC C1928 is set when the control module detects that the VAPS solenoid return circuit is shorted to ground, meaning the circuit is grounded at a point other than the intended module controlled path. This unwanted ground can cause uncontrolled solenoid current or prevent the module from regulating assist. With this code set,...

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