Code Definition

C1149 — Hydraulic Fluid Pressure/ Flow Circuit Failure

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

About C1149

C1149 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1149 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

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.

C1149 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 ABS and stability control module monitors the hydraulic control unit pressure and flow circuits to confirm the system can build and modulate brake pressure on demand. DTC C1149 sets when the module detects an electrical or functional fault in the hydraulic pressure and flow control circuit, such as the pressure sensor or the switch over (isolation) solenoid valve that routes fluid during ABS, traction, and stability events. The module relies on feedback from the pressure sensor and correct solenoid operation to manage wheel slip, so when the signal is out of range or the solenoid circuit i...

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

Quick Facts