Code Definition

C1899 — Steering VAPS II Circuit Loop Short To Battery

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

About C1899

C1899 is a manufacturer-specific chassis diagnostic trouble code recorded for Ford vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1899 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.

C1899 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 varies steering effort with vehicle speed by controlling current to an electronic power steering control valve solenoid, the EVO actuator, on the steering gear or pump. The VAPS module drives the solenoid on one circuit and monitors the return on a second circuit to confirm the loop is healthy. DTC C1899 sets when the module detects the solenoid loop shorted to battery voltage, meaning one of the solenoid circuits is being fed an unwanted positive supply rather than carrying only the controlled drive current. With this code set the module can no...

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