2002 VW Jetta TDI

2002 VOLKSWAGEN JETTA
105,000 MILES • 4 CYL • 2WD • AUTOMATIC
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KSEVERANCE
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Unable to start my VW 2002 Jetta TDI. Fault codes are PO725 Engine speed circuit malfunction; P1780 manufacture control transmission; and P1850 manufacture control transmission. I also noticed that the glow plug light will not come on when I try to start the cold engine. These codes were read from an Actron OBDII auto scanner. The starter turns engine over like normal, but it will not start. I did have the battery out to charge up and pulled fuses out to see if there was a draw on the battery with the key in the off position, but discovered there wasn't a draw on the battery. I checked the fuses for the glow plug and they are okay. The vehicle will not start now. What is the problem with the vehicle?

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Jan 6, 2011 at 1:23 AM
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FIXITMR
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did you find and check the 50amp glow plug fuse?
Jan 7, 2011 at 8:50 AM
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MHPAUTOS
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If the 50Amp fuse is ok, check the glow relay also note that the relay feed power to the glow plugs in groups of 2, that is one power wire feeds 2 glow plugs and there are 2 feeds out of the relay.

mark (mhpautos)
Jan 7, 2011 at 10:34 PM
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