The other day I got my volvo back from the mechanic. We thought it was the ECU at first but when he put the alternator belt on right and fixed the adjusting pin, the thing cranked right up ... so I drove it home. I went to drive to work last night, and go figure ... it doesn't crank. So I used to OBD and I got back this -
3-1-2: Signal Missing for Knock-Related fuel enrichment
Cause : Wiring break between EZK terminal and Fuel Injector #28.
I don't have a EZK in my Volvo. its the 2.4LH Turbo Intercooler.
So before I pay for ANOTHER tow to my mechanic, and I wanted to see if someone might have an idea for a quick fix.
Thanks MVS.
Help me, and my 740 Turbo =(
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1990_740Turbo
- Posts: 21
- Joined: 3 April 2007
- Year and Model:
- Location:
- billofdurham
- MVS Moderator
- Posts: 6507
- Joined: 2 February 2006
- Year and Model: 855, 1995
- Location: Durham, England
- Been thanked: 5 times
My list of fault codes shows 3-1-2 as signal missing but does not specify EZK.
Time to get out the ohm-meter and do some testing.

Bill.
Time to get out the ohm-meter and do some testing.

Bill.
Work was good - retirement is better.
1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.
1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.
- billofdurham
- MVS Moderator
- Posts: 6507
- Joined: 2 February 2006
- Year and Model: 855, 1995
- Location: Durham, England
- Been thanked: 5 times
Sorry, where did we part company? Let me know and I will try to explain it in easier language.
Bill.
Bill.
Work was good - retirement is better.
1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.
1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.
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