Code Definition

C1709 — Right Rear Centre Sensor Circuit Failure

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

About C1709

C1709 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 C1709 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

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.

C1709 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

DTC C1709 relates to the right rear centre ultrasonic sensor circuit of the parking aid (reverse sensing) system. The Parking Aid Module (PAM) supplies each rear bumper sensor with power, ground, and a signal line, and each sensor emits ultrasonic pulses and listens for the returning echo so the module can calculate the distance to obstacles behind the vehicle. C1709 is set when the PAM detects an open circuit, a short, or an invalid response on the right rear centre sensor circuit during the system self test or normal operation in reverse. When this code is set the parking aid system is typic...

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