Code Definition

C1745 — Front Sounder Circuit Short to Vbatt

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

About C1745

C1745 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 C1745 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.

C1745 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 front parking aid system uses a dedicated front sounder, driven by the Parking Aid Module (PAM), to produce the audible warning tone for obstacles ahead of the vehicle. The module monitors the voltage on the front sounder drive circuit, and DTC C1745 is set when it detects battery voltage on the circuit when none should be present, indicating the wiring or a connector is shorted to a power feed. Because the module usually sits at the rear of the vehicle and the sounder behind the instrument panel, the long harness run gives plenty of opportunity for chafe damage, and aftermarket equipment ...

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