P1651 Opel Signum DTC Code

Opel Signum Engine Specifications:

Engine Type :	Multi-Cylinder Engine
Cylinder Type :	V-Type Engine
Engine Air Intake Process :	Supercharged Engine

Your Opel Signum engine control system detects a problem, the computer stores the diagnostic trouble code P1651 in its memory. To figure out what is wrong with your vehicle you must first extract the P1651 DTC For Opel Signum.

P1651 Opel Signum engine problem can be occur defective fan clutches are a common and often overlooked cause of engine overheating. The shear characteristics of the clutch fluid gradually deteriorates over time, with an average loss in drive efficiency of about 200 rpm per year. Eventually slippage reaches the point where effective cooling is no longer possible and overheating results. (On average, the life of a fan clutch is about the same as a water pump. If one needs to be replaced, the other usually does too.)

P1651 Opel Signum DTC Meaning

P	Powertrain Code - Problem is related engine, transmission and emissions systems.
1	MFG - Manufacturer Specific
6	Vehicle Speed Control And Idle Control System
5	BBV Sensor Circuit Low Voltage
1	PCM Stack Overrun

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P1651 Opel Signum code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.