Astra boost pressure sensor fault

My 2014 Vauxhall Astra (gasoline engine) is acting up. It has 109857 km on the clock. The engine light is on, and it's jerking when accelerating. I hear whistling and loud hissing during acceleration and sometimes it stalls at idle. Fuel consumption is up, and power is definitely down. Suspect it's a bad boost pressure sensor, probably a cable or plug connection issue. Any thoughts?

4 comment(s)

Sounds familiar! I had similar issues with my Astra: check engine light, jerking, the works. That whistling is likely a boost leak somewhere in the turbo system. Boost pressure sensor faults are common. Has the car been scanned for codes?

Yeah, I scanned it. Showed a boost pressure sensor fault. I checked the sensor near the intake manifold, but the wiring looks okay at first glance. Any specific areas on the cable or plug I should focus on?

Honestly, I fiddled with mine for ages and couldn't pinpoint it. Turned out to be a corroded pin inside the connector. If you're not confident tracing it, I'd get a workshop to check it out. They have the proper tools to diagnose it properly.

Cheers for the advice. Took it to a local shop, and you were spot on – corroded connector pin. New sensor and connector fixed it, costing 95€. Runs like a champ again!

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