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Old 10-17-2007, 02:40 PM   #1
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Posts: 18
Default Two power related codes: 18010 and 00668

Here are the VAG-COM scan results for my 1996 Audi A4 non-Quattro Auto trans:

Data version: 20070723
Chassis Type: 8D - Audi A4 B5
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77

Mileage: 122020km/75819miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No: 8D0 906 266
Component: 2,8l V6/2V MPI OBD2 D03
Coding: 01051
Shop #: WSC 00000

1 Fault Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 89-00 - Unknown Error Elaboration
Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 8D0-927-156.LBL
Part No: 8D0 927 156 F
Component: AG5 01V 2.8l2V USA D80
Coding: 00000
Shop #: WSC 00000

2 Faults Found:
00668 - Supply Voltage Terminal 30
31-00 - Open or Short to Ground
00526 - Brake Light Switch-F
27-00 - Implausible Signal

-------------------------------------------------------------------------------

The 00526 fault code can be ignored. So the 18010 and 00668 codes both relate to "Supply Voltage Terminal 30." In my searching through this forum, many posts relating to these fault codes had to do with a bad battery. My battery was suspect already, so I replaced it today.

The codes still get thrown every time the car is started. I can clear the codes with the VAG tool while the car is running, and they will not appear during normal driving of the car. However, every time the car is turned off and then restarted, the codes are thrown. The Malfunction Indicator Lamp will light up "Check Engine" and the Transmission gear selector line will show all gears selected. When I clear the codes in each module, the MIL will go out and the transmission gear selector line will show only the proper gear engaged.

So, could these two codes be related to another item, like the ignition module? The driveability of the car is not affected at all, it's running great.

Thanks in advance for any help!
cmcniel is offline   Reply With Quote
Old 10-17-2007, 10:03 PM   #2
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Default Check for high resistance ground connections at the batt cable/engine block and chassis.

diagnosticator1 is offline   Reply With Quote
Old 10-17-2007, 10:03 PM
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00526, 00668, 156, 18010, 1996, 8d0, 927, a6, allorad, audi, code, codes, error, fault, p1602


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