Code Definition

B1A70 — Compressor Solenoid Positive Supply

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

About B1A70

B1A70 is a manufacturer-specific body diagnostic trouble code recorded for Land Rover vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1A70 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 Ride Level Control Module (also referred to as the Air Suspension Control Module) monitors the electrical supply circuit feeding the compressor solenoid valve, which on Land Rover air suspension systems controls the exhaust and dryer venting function of the compressor pack. DTC B1A70 is set when the module detects an abnormal voltage condition on the compressor solenoid positive feed, such as an open circuit, a short to ground, or a short to battery, when comparing the commanded driver output against the feedback voltage measured at the pin. When this fault is active the system cannot reli...

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