Vauxhall Astra G / H - Engine does not run smoothly | HELLA

Vauxhall

Astra G / H

Model year: from 2003/2004

Engine: Z16XEP

Engine control lamp comes on

Indicating port deactivation position sensor; circuit voltage too low / too high.

If the fault listed above is determined, it may be caused by a defective intake-manifold flap potentiometer.

In this case, first check the engine harness and the correct fit of the vacuum hoses.

If no defect is determined here, the potentiometer’s limit values need to be tested using a diagnostic tool.

Reading time: 1 minute

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