C3778 Pontiac Gpx DTC Code

Pontiac Gpx Engine Specifications:

Engine Type :	Single Cylinder Engine
Cylinder Type :	In-Line Engine
Engine Air Intake Process :	Supercharged Engine

Your Pontiac Gpx engine control system detects a problem, the computer stores the diagnostic trouble code C3778 in its memory. To figure out what is wrong with your vehicle you must first extract the C3778 DTC For Pontiac Gpx.

A good ground connection is also extremely important. C3778 Pontiac Gpx engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).

C3778 Pontiac Gpx DTC Meaning

C	Chassis Code - Problem is controller area network wiring bus and modules.
3	SAE - Generic
7	Ignition System Or Misfire
7	Exhaust Gas Recirculation System Valve 1
8	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

The C3778 Pontiac Gpx Check Engine lamp is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C3778 diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks C3778 DTC For Pontiac Gpx with your car's computers to find out exactly what's prompting the light to turn on.