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Vauxhall Zafira 2.0 Turbo - Fault Code P1106 #

Posted by Pete Mutlow on May 12, 2009, 11:34 pm

Year of Manufacture *: 2002
Engine Code or Type *: Z20LET
( Optional ) Scanner used: ACR4 G2

Evening all,

Went to this vehicle last week which was seriously over-fuelling (CO at idle and fast idle in excess of 9.9%) and running poorly. Fault codes stored related to MAF and HO2 sensors. Poor scope on MAF resulted in MAF being changed by owner with Fuel Parts item. This took EML light out and ran better but service light came on. Returned today to have a look and found numerous fault codes (24!). Cleared all down and P1106 (unknown code) returns only when vehicle is driven. Vehicle stalls and appears to be lacking in power. Emissions at idle are perfect but slightly high on CO at fast idle at 0.6%. All other gases are ok. P1106 was not there on first visit but appeared when new MAF was fitted. Research tonight tells me this fault code could be either MAP sensor (why does this have MAP sensor when it has a MAF?), Turbo Boost Control or blocked CAT. Any ideas? Front Lambda sensor is occaisonally sticking a bit high on 800mv at fast idle. Customer is going to remove and clean Lambda sensor tomorrow. Vehicle was re-mapped a few months ago (not by me). All thoughts gratefully received.

Regards

Pete M

Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106

Posted by martin young <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT2736' width='330' height='300' border=0 style='border:none;'> on May 13, 2009, 7:17 am, in reply to "Vauxhall Zafira 2.0 Turbo - Fault Code P1106"
Martin Young

pete
p1106 is a boost pressure control fault code but there is actually three different p1106 codes
what is the map reading koeo?
also if it was me and going from past bad experiences the first thing i would do before going any further is bin that foolparts maf sensor
martin

Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106

Posted by Alan Kane <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5535' width='330' height='300' border=0 style='border:none;'> on May 13, 2009, 8:38 am, in reply to "Vauxhall Zafira 2.0 Turbo - Fault Code P1106"
Alan Kane - Administrator

I wonder how soon after it was mapped did the fault occur?

Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106

Posted by Pete Mutlow <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT1569' width='330' height='300' border=0 style='border:none;'> on May 13, 2009, 10:26 am, in reply to "Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106"
Peter Mutlow

Morning all.

Alan. Re-map occurred prior to customer purchasing vehicle. No problems with driveability until he put a K & N filter on and gave it a good thrashing - then problems started. K & N Filter now binned. Martin. Yes, I took a sharp intake of breath when I saw the Fuel Parts MAF and customer is aware of the ramifications. Spoke again to the customer this am. and apart from the stalling, the "lack of power" manifests itself as "shuddering when the turbo kicks in". If I have to go back to it, will do the koeo check and will also check inlet vacuum.

Regards

Pete M

Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106

Posted by chris angus <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on May 14, 2009, 3:44 pm, in reply to "Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106"

These turbos ar notorious for giving up on these shortly after a remap, need to check the max boost in live data.

Sounds like it might be overboosting to me, bad remap

Re: Vauxhall Zafira 2.0 Turbo - Fault Code P1106 #

Posted by Mick Gormley <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5597' width='330' height='300' border=0 style='border:none;'> on May 14, 2009, 4:46 pm, in reply to "Vauxhall Zafira 2.0 Turbo - Fault Code P1106 #"
Mick Gormley

Hi Pete
This sound very similar to one we did not long ago. A Genuine MAF restored the power but we were still left with intermittent hestitation.This was cured by replacing the turbo wastegate regulating valve ,cheap about £20.The stalling and poor 02 sensor switching was cured by cleaning the ecu connections.Hope this helps.
regards Mick

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