U1509 Opel Diplomat DTC Code

Opel Diplomat Engine Specifications:

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

Your Opel Diplomat engine control system detects a problem, the computer stores the diagnostic trouble code U1509 in its memory. To figure out what is wrong with your vehicle you must first extract the U1509 DTC For Opel Diplomat.

To solve U1509 Opel Diplomat problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

U1509 Opel Diplomat DTC Meaning

U	Network Code - Problem is climate control system, lighting, airbags, etc.
1	MFG - Manufacturer Specific
5	Auxiliary Emission Controls
0	Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
9	A/C System High Pressure High Temperature

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. U1509 Opel Diplomat 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.