Operation CHARM: Car repair manuals for everyone.

Engine Number/Engine Characteristics






Engine Number/Engine Characteristics

The engine number ("engine code" and "serial number") are located at the engine/transmission joint.






The engine code is also printed behind the oil filter on the cylinder block.

In addition, a label with the "engine code" and "serial number" is affixed to the intake manifold.

The engine code is also included on the vehicle data plate.

Vehicles with Four Digit Engine Codes

Four digit engine codes beginning with the letter "C" are used. The first three digits describe the mechanical structure of the engine and are still stamped on the engine, as before. The fourth digit describes the engine output and torque and depends on the Engine Control Module (ECM). The four digit engine code is on the type label, the vehicle data plate and the ECM.

Engine Data






1 SULEV = Super Ultra Low Emissions Vehicle

2 ULEV 2 = Ultra Low Emissions Vehicle 2

3 If the voltage supply to the Engine Control Module (ECM) drops below 12 volts, idle speed is raised in stages up to 990 RPM. Idle speed is not adjustable.