Code Definition

C1933 — Solenoid Current Out Of Range

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

About C1933

C1933 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 C1933 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

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.

C1933 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 control module monitors the current flowing through the controlled solenoid as feedback to confirm the solenoid is operating correctly. DTC C1933 is set when the measured solenoid current falls outside the expected range, either too high or too low, for the commanded output. In variable assist power steering and related chassis systems the module pulse width modulates the solenoid and compares the actual current against a target value. Current that is too low points to high resistance or an open circuit, while current that is too high points to a short or a solenoid out of specification. W...

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