A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Code 18010

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Old Jul 7, 2010 | 05:30 AM
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kermac's Avatar
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Joined: Dec 2001
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From: 100 km from Canberra, New South Wales, Australia
Default Code 18010

Here's the story (apologies - copied to several forums)

2000 model A4 1.8t quattro AJL motor (132 kW Euro/Australian spec)

Car has been sitting in the body repair shop for a week for a minor repair. She often sits under cover in our winter weather (down to -4) for a week or two, so I don't think that's significant.

The repairer called to say the car was ready but it wasn't starting. He had disconnected the battery and a couple of ground connections whilst repairing the LH door skins, front bumper and boot.

I took my VCDS over and came up with the following:
Address 01: Engine Labels: 058-907-557-AJL.lbl
Part No: 8D0 907 558 DA
Component: 1.8L R4/5VT MOTR HS D01
Coding: 04001
Shop #: WSC 85555

1 Fault Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
Readiness: N/A

I spent most of the day in the body shop today and got nowhere. The ground I covered was as follows:
Cleared the code and retried. 18010 came straight back.
Replaced the battery with an almost-new one.
Checked the fuel supply whilst cranking.
Checked the plugs for wetting.
Checked the ignition coil packs for spark whilst cranking.
Replaced the ignition module with a spare.
All fuses OK.
The battery is old (at least six years, maybe 10) but is still testing at nearly 500 cca. The alternator and starter motor are new. We supplemented the battery with a boost pack at one stage to no effect. She cranks strongly, but just won't fire.

If I switch on the headlights and crank her over, the lights go out while she continues to crank strongly.

Anyone got the faintest notion how I get my wee beastie going again?

All contributions gratefully received.

Cheers

kermac
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