New Beetle L4-2.0L (AZG) (2003)
Engine Control Module: Customer Interest
Engine Controls - MIL ON/DTC P1603 (18011) Stored
Date: Jan. 14, 2005
Diagnostic Trouble Code (DTC) P1603 (18011) Stored in
All with Electronic Power
1999 --> 2005 Control (see table)
DTC P1603 (18011) "Control unit faulty" stored in DTC memory.
DO NOT automatically replace ECM for this condition.
First perform the following:
Verify that battery voltage and condition are OK. (Charge and load test as necessary).
If battery voltage is low:
Correct reason for low battery voltage.