Engine
What Is Limp Mode and Why Does Your Van Enter It?
Limp mode is a safety feature that limits engine power to prevent damage when the ECU detects a serious fault.
When the engine control unit detects a fault that could cause damage, it activates limp mode — also called reduced power mode. The vehicle will feel sluggish, acceleration will be severely limited, and the rev range may be capped. Common triggers include turbo boost faults, throttle position sensor failure, transmission issues, or high engine temperatures. While the vehicle can still be driven carefully to a garage, ignoring the underlying fault risks further damage. A diagnostic scan will reveal the fault code causing the limp mode activation.
Key takeaways
- Limp mode limits power and revs to prevent engine damage
- Turbo, sensor, and transmission faults are common causes
- A diagnostic scan identifies the exact fault code triggering limp mode
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