C0748 Opel Astra DTC Code

Opel Astra Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	W-Type Engine
Engine Air Intake Process :	Naturally Aspirated

Your Opel Astra engine control system detects a problem, the computer stores the diagnostic trouble code C0748 in its memory. To figure out what is wrong with your vehicle you must first extract the C0748 DTC For Opel Astra.

A good ground connection is also extremely important. C0748 Opel Astra 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).

C0748 Opel Astra DTC Meaning

C	Chassis Code - Problem is controller area network wiring bus and modules.
0	SAE - Generic
7	Ignition System Or Misfire
4	Control Module Throttle Actuator Position Performance
8	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

There are currently two main types of cylinder deactivation used today, depending on the type of engine. C0748 Opel Astra code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.