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Chat Area => General Car Chat => Topic started by: Migv6 le Frog Fan on 16 January 2026, 17:13:57

Title: Vauxhall 1.3 cdti problems.
Post by: Migv6 le Frog Fan on 16 January 2026, 17:13:57

BIL has recently bought a 2018 combo van fitted with the above engine which is giving problems.
Performance is a bit sluggish and light on the dash (EML presumably) comes on and off randomly.
He brought it over to me yesterday and I plugged my Autel reader into it, and it gave three codes.

P0235. turbo boost sensor A circuit.
P0069. Manifold absolute pressure barometric pressure correlation.
P0235. ( pending) turbo boost sensor A circuit high.

Other than sticking a £15 ebay boost sensor on it and hoping for the best, Im a bit clueless as to where to start with this.
Anyone got any better thoughts ?

Tia.

Title: Re: Vauxhall 1.3 cdti problems.
Post by: STEMO on 16 January 2026, 18:29:25

If it has been used for short journeys and not given regular oil changes, it's going to be bunged up.

Title: Re: Vauxhall 1.3 cdti problems.
Post by: Migv6 le Frog Fan on 16 January 2026, 18:33:13

He does a fair amount of motorway type driving in it.
Dont know about servicing as he has only had it a few months.
I would like to get some clues for him as he uses his local friendly garage and I have the distinct impression that they rip him off as he knows nothing about engines.
Plus, he is alone in my family of in laws as being the only one I would piss on if he was on fire, as somehow he has turned out to be a half decent bloke.  :-X ;D

Title: Re: Vauxhall 1.3 cdti problems.
Post by: STEMO on 16 January 2026, 20:02:41

You said 'recently bought', so I assumed he'd have no idea how it had been used in the past.

Title: Re: Vauxhall 1.3 cdti problems.
Post by: STEMO on 16 January 2026, 20:06:55

Timing Chain: The most critical issue; wear leads to rattles, then chain/guide failure, potentially causing catastrophic engine damage (valves hitting pistons).
ECU Water Ingress (Corsa D): Poor ECU placement causes water damage, leading to injector errors (P020x codes), misfires, or complete non-starts.
Diesel Particulate Filter (DPF) & EGR: Clogging from short journeys and carbon buildup causes loss of power, sluggishness, and regeneration issues.
MAF Sensor: Can fail, causing limp mode and reduced power without triggering specific fault codes.
Fuel System: High-pressure fuel pump failures and issues with injector wiring (P2146) or clogged fuel filters occur.
Cold Starting: Can be affected by faulty coolant temperature sensors or glow plugs.


This could be his loss of power.

Title: Re: Vauxhall 1.3 cdti problems.
Post by: Migv6 le Frog Fan on 16 January 2026, 23:22:44

I told him to give it a good thrash in a lower gear for a few miles on the motorway, which he did but that hasnt solved the problem.
I think he has owned it about 6 months now.