Code Definition

C1263 — Lamp Warning Relay Circuit Open

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

About C1263

C1263 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 C1263 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.

C1263 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 Anti-lock Brake System (ABS) module controls the ABS warning lamp circuit through a dedicated warning lamp relay (or an internal solid state driver on later vehicles). DTC C1263 sets when the module detects an open circuit specifically in the warning lamp relay drive path, meaning the module sees infinite or very high resistance when it attempts to energise the relay coil. This is a more specific variant of the generic warning lamp circuit failure code and typically points at an open relay coil, broken drive wire, or open at the connector pins on either end of that drive circuit. When this...

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