Code Definition

C1903 — Ride Control RR Shock Actuator Circuit Short To Battery

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

About C1903

C1903 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 C1903 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.

C1903 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 ride control system varies damping at each corner using a shock actuator commanded by the ride control module. DTC C1903 sets when the module detects the right rear shock actuator circuit shorted to battery voltage, meaning the actuator control or return wire is contacting an unwanted positive supply rather than carrying only the controlled drive current. The actuator is a solenoid or small motor that changes a valve inside the shock to vary damping firmness. With this code set the right rear damper typically defaults to a fixed rate, the ride may feel uneven, and a ride control...

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

Quick Facts