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P1240 Diagnostic Trouble Code Discussion for July 2009

Ignition Angle

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Trouble Ticket Help Requests for DTC P1240
Help Request Posted
1999 Volkswagen Passat GLX 2.8L Poor Idle Quality, MIL Lamp on VIN: WVWPD63BXX
P1240: Injector Cyl 4 1-N33 Open Circuit - VAG CODE 17648. Has multiple codes set. P1237-P1242 For Open Injector Circuit. Has a bit of a rough idle to it, but no misfire. Unclipped each injector one at a time, as each one is unclipped engine stumbles. Checked all wires, no corrosion ect. Also has a P0422 Main Catalyst...
July 22, 2009