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Discussion Starter · #1 ·
In the last week, Twice I've seen the service light come on and the dash say that immediate service required. Bmax year 2013.

Sequence of events, Its been raining, drive for over 10 mins, misfire/power loss, engine service light on. Car rumble on on 1 or 2 cylinders - but not smoothly on all 3.


For can't find issue as "AA cleared codes" although if you turn off engine it seems to clear fault anyway.


Codes were all concatenated together
<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">Engine control 1 - ZA4 / Motronic MED 17.0.1

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P06A601 - Sensor reference voltage A. Error Message : Outside specified range.

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P083200 - Clutch pedal switch A. Error Message : Signal too high.

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P053216 - Air conditioner pressure sensor. Error Message : Signal too low.

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P001794 - Crankshaft position sensor (bank 1, sensor B). Error Message : Malfunction.

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P023716 - Turbocharger boost pressure sensor. Error Message : Signal too low.

<div style="-webkit-font-smoothing: antialiased; margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; line-height: inherit; font-family: Calibri, Helvetica, sans-serif; vertical-align: line;">P029921 - Turbocharger. Error Message : Pressure too low.poss air mass meter fault




After a while engine seems to warm up / dryout and car revs and drives normal again - till next rain.


Local ford garage can't yet find issue....


Any ideas?


Thanks
Stuart
 

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First thing i do in these situations is spray the ht leads and plug caps with dampstart. If that cures it, i would change the leads and caps at some point.
 

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There are no ht leads or plug caps on 1.0 ecoboost. Each plug has it's own coil controlled by EMS.That's a real weird set of fault codes; and if it's a water leak problem, it could be verydifficult to find.
Try using a Bosch Auto specialist rather than a Ford dealer.
 

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Discussion Starter · #4 ·
Thanks for all the comments.

Ford Guildford finally found the cause of the issue after lots of water spraying and test runs it finally faulted for them in the service bay ( though water/damp may just be coincidental) - they say that pin 30 of the multi group connector under the battery tray was oxidized and causing voltages to fluctuate and create errant issues all over the place.


Fingers crossed this was the fault and it fully cured.
The car has had 3 subsequent short journeys today and all been fine (dry weather) - lets assume it going to be OK for a good while now.


Credit to the Ford Guildford dealer, the car is well cleaned and very perky on its return - they always seem to spruce it up well and remind you its actually a neat little car.
 

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Seems that there has been water ingress at some point.I hope it's sorted for you now
 
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