Code Definition

C1B11 — Pressure Control Valve

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Land Rover

About C1B11

C1B11 is a manufacturer-specific chassis diagnostic trouble code recorded for Land Rover 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.

C1B11 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 C1B11 is set by the Suspension Control Module when it detects incorrect operation of the air suspension pressure control valve. The fault is logged when the valve does not respond as commanded, or when system pressure feedback does not change in line with the expected valve operation during filling, holding, or venting phases. This means the module cannot accurately regulate air pressure within the suspension, affecting ride height control and stability. With this code set the driver may notice the vehicle failing to reach or hold height, slow or uneven levelling, the compressor running ex...

Join TaT to view the complete code information and diagnostic details.

Quick Facts