
2003 Volkswagen Passat W8 4.0L Communication Issue
We are looking for the next plan of attack. Here is some background info: has an aftermarket radio, we unplugged the radio harness from the factory connector, no change, no communication to ECM. We went to the obdII diagnostic connector and tested pin #4 for g...
Summary posted 9/23/2013
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Message Closed w/Summary
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VIN | WVWUK63B13 |
Engine | 4.0 L / 8 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Communication Issue |
Occurs | Intermittently |
Trouble Codes
P1635 | 5-Volt Reference 'A' Circuit Malfunction |
Message Closed w/Summary
Vehicle Data
2003 Volkswagen Passat W8
VIN | WVWUK63B13 |
Engine | 4.0 L / 8 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Communication Issue |
Occurs | Intermittently |
Trouble Codes
P1635 | 5-Volt Reference 'A' Circuit Malfunction |