2002 GMC C7500 Topkick C7H042 8.1L code P1663
DTC P1663 change engine oil lamp control circuit? I cannot find any diagnostic information on this code. Has anyone seen this code before and if so any suggestions on where to begin to fix it. I cleared the code and it came right back. Any help will be appreci...
FIX posted 10/1/2014
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Message Closed w/FIX
Vehicle Data2002 GMC C7500 Topkick C7H042
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2002 GMC C7500 Topkick C7H042
VIN | 1GDM7H1E72 |
Engine | 8.1 L / 8 cyl / GAS |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Code P1663 |
Trouble Codes
P1663 | Charging System Lamp Control Circuit Malfunction |