Engine Light issues

[Steve101uk]

I took my Pilote G740 C Fiat ducato in for service last week. After the service the engine light came on. The technician’s found the code came up for the air flow metre, next day changed the metre and the engine light still kept lighting up and the van went into limp mode. Fault diagnosis code showed the Egr valve required changing. This work was done and after around 20 miles no engine light. So thinking all is well and the van repaired, we set off this morning. One mile down the road the engine light came back on. When I called the campsite to explain why we are not arriving the warden asked “has the van been serviced recently?” which made me wonder if there could be a relationship to the issue and the service. The van has been very reliable up to now, and has done 25000 odd miles. So I am at a loss. It is now back at the garage to be looked at on Monday.

I know nothing about mechanics. Any ideas what might be wrong gratefully received…thanks Steve

 

[Winger]

It’s got little to do with mechanics, more electronic rubbish that is supposed to make things work better.
So to date they have fitted two parts at your expense and still no further forward proves that the people working on it haven’t a clue either.
Yes I hate electronics

 

[SandraL]

To remove the air filter through an A class bonnet means, on our fiat based hymer, a bit of wiggling of the air filter housing.
My diy first change of the air filter resulted in air flow fault and limp mode. No parts required, but air flow bit needed reinserting and a fault code reset.

 

[Nirvanauk]

What ever happens don’t let them change your fuel filter as disaster will ensue. Speaking from experience.

 

[Googlebot]

Probably knocked a plug somewhere and you have a dodgy connection.

Might also be a coincidence though.

People hate the electronics, however my engine light came on and told me a sensor was duff. I tested the sensor and it was indeed, knackered. Changed and problem solved.

Don’t let them keep changing parts at your expense, they need to actually test the sensors that seem dodgy, not hope for the best and change them.

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[Spriddler]

Don’t let them keep changing parts at your expense, they need to actually test the sensors that seem dodgy, not hope for the best and change them.

I had that issue on my car which was badly overheating. The garage fitted no end of parts including the thermostat, several sensors, fan motor, fan control relay as indicated by the diagnostic readout (£1200 over 3 workshop visits) without solving the problem. I mentioned it when I dropped in to a long time pal (a 'greasy rag' mechanic) on my way home who has had a lockup on a pig farm for 20 years. He told me to open the bonnet. After leaning on the slam panel mulling it over for 30 seconds he felt that one side of the rad was hotter than the other and said it probably had a blockage. Loads of red silty muck came out when he flushed the rad and the problem was solved. He wouldn't even accept a drink.

 

[Stealaway]

The van has been very reliable up to now, and has done 25000 odd miles.

Has the service trip ever been reset after the service's. It comes on at around 28,000 and cause the engine to go into limp mode

 

[pappajohn]

Go to another garage
Problem with generic OBD readers is they can't pinpoint the actual faulty item.
It should say something on the inlet system, something on fuel metering, something on exhaust and recycling system.
Pointing to a specific sensor etc means it may be the sensor or wiring or even a different sensor on the same system.

 

[jockaneezer]

I might have imagined this, or did I read about it in here, it's not something daft like they've put too much oil in it at the service and that brings on the light because it thinks it's overfueling ?

 

[Jimbohorlicks]

Buy an OBD reader and recheck,make a note and erase the readings and then see if the van goes back to limp mode, it will cost you £20 max to buy a reasonable one.

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[Parrot Face]

You have my sympathies. I had a similar problem and it was the ABS pump. Was given the run around by my local garage until I went to a top Fiat Professional garage who charged me over 2k. My vehicle at the time was 2012 and apparently the Bosch pumps were dodgy around the 2011 period. However don't convince yourself that this could be the same fault as yours, as just from reading the various threads there are many reasons why the light comes on. Unfortunately what seems to be common to many of these threads is that garages struggle to find the exact cause but when they do they've tried many expensive fixes.

 

[TerryL]

Some years ago I got the "run around" from my local garage after the engine warning light came on. It was eventually sorted by a Fiat Professional service centre, which would have saved me a lot of money if I'd done that first. Seems only Fiat have the necessary software to itemise faults in detail - outside that it's usually personal experience.

Incidentally, last year I had the engine warning light come on and my ODB reader said air flow sensor (but no limp mode). Turned out the fuse for the REVERSING LIGHTS had blown! Yup, same power feed to the sensor!