Code Definition

C1736 — Air Suspension LR Corner Down Timeout

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

About C1736

C1736 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.

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.

C1736 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 C1736 is a manufacturer specific chassis code used in Ford and Lincoln air suspension systems, most commonly seen on the Expedition and Navigator. To lower a corner, the air suspension control module opens that corner's air spring solenoid together with the vent solenoid on the compressor dryer assembly, allowing air to escape until the ride height sensor reports the target height. C1736 is set when the module commands the left rear corner to lower but the left rear height sensor does not register the expected drop within the allowed time. This points to a trapped air or feedback problem, ...

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