Code Definition

C1846 — Air Suspension Front Inflator Solenoid Output Circuit Open

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

About C1846

C1846 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 C1846 is stored, the module has detected an open (broken or disconnected) electrical path 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.

C1846 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 C1846 is a manufacturer specific chassis code used on Ford and Lincoln air suspension vehicles such as the Lincoln Continental, Mark VIII, and Navigator. The air suspension control module drives the front air spring inflator (fill) solenoid to admit compressed air into the spring, and it continuously checks the electrical integrity of that driver circuit. C1846 sets specifically when the module detects an open circuit, meaning no current flows when the output is commanded on, which distinguishes it from the general circuit failure code C1845 for the same solenoid. The open can be in the so...

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