Code Definition

C1778 — Power Steering Failure

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

About C1778

C1778 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.

C1778 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 C1778 indicates that a failure has been detected in the power steering system. On Ford hybrid applications such as the Escape Hybrid, steering assist comes from an electro hydraulic power steering (EHPS) pump, an electrically driven pump supplying hydraulic pressure so that assist remains available while the petrol engine stops and starts. The code sets when the steering control module detects abnormal pump operation, supply voltage problems, excessive pump temperature, or implausible feedback from the steering system. When this code is set, the driver typically notices heavy steering at l...

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