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1996 960 Check Engine Code PO740

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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ctlytle
Posts: 5
Joined: 14 August 2012
Year and Model: 1996 960
Location: Seneca Falls, NY

1996 960 Check Engine Code PO740

Post by ctlytle »

My 960 runs fine, but makes an audible groaning sound when shifting into the high/overdrive gear. Maybe once every other month it will mis-shift and go into "limp" mode, the check engine light comes on, the up arrow on the dash flashes and the indicator lights by the shifter (E,S & W) flash. I pull over, turn the car off, turn it on and we're good to go for another month or so...except the "check engine" light won't go out. Had a local guy check and he pulled a PO740 Code (Torque Converter ...) but that is a generic code so I took it to the dealer. He said no problem and cleared the code and light went out ... for about ten miles. It's back on but the car runs/shifts fine. Under the "if it ain't broke don't fix it" category, I don't want to bother with this until it's a real problem but would like the check engine light out...i think in NYS it won't pass inspection with a check engine light on. Any idea how to get the light off, or what this might mean that I'm missing would be appreciated. Thanks in advance.

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