Land Rover
Turbo boost control position sensor B performance, stuck high: the secondary turbo's electric actuator is stuck. Seen with P004B on Discovery 4 / RR Sport 3.0.
P259B fault code: what it means
P259B: Turbo boost control position sensor B performance, stuck high: the secondary turbo's electric actuator is stuck. Seen with P004B on Discovery 4 / RR Sport 3.0.
Usual causes, most likely first
- turbo electronic actuator stuck
- seized turbo vane mechanism
- actuator wiring or connector
P259B by make
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Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.