Diagnostic Trouble Code
P02EF
Cylinder #2 Injector Circuit Range/Performance
Technical Description P02EF
Cylinder #2 Injector Circuit Range/Performance
What Does This Mean P02EF?
The OBD trouble code P02EF is a generic powertrain code common to all vehicles. Although the code's reference is the same, the repair procedure may vary somewhat with the manufacturer.
This code implies that the powertrain control module (PCM) has experienced an out of range or performance problem involving the fuel injector for the #2 cylinder in the firing order.
In short, this fuel injector is malfunctioning for one of a variety of reasons. It is important to diagnose and repair this type of problem as soon as possible. When a fuel injector malfunctions, it causes ripples down the line, meaning the engine's operating parameters change due to the mixed signals at the PCM.
This type of problem is better addressed as soon as possible to prevent damage to other internal components. A bad fuel injector will effect the spark plug, cause detonation, effects the oxygen sensor and catalytic converter, and several other components as well.
Refer to a vehicle specific repair manual to determine the location of the #2 cylinder for your particular application.
Cross-section diagram of a typical automotive fuel injector (provided by WikipedianProlific):
This code implies that the powertrain control module (PCM) has experienced an out of range or performance problem involving the fuel injector for the #2 cylinder in the firing order.
In short, this fuel injector is malfunctioning for one of a variety of reasons. It is important to diagnose and repair this type of problem as soon as possible. When a fuel injector malfunctions, it causes ripples down the line, meaning the engine's operating parameters change due to the mixed signals at the PCM.
This type of problem is better addressed as soon as possible to prevent damage to other internal components. A bad fuel injector will effect the spark plug, cause detonation, effects the oxygen sensor and catalytic converter, and several other components as well.
Refer to a vehicle specific repair manual to determine the location of the #2 cylinder for your particular application.
Cross-section diagram of a typical automotive fuel injector (provided by WikipedianProlific):
Symptoms P02EF
1
The check engine light will illuminate and code P02EF will set
2
The engine will run rougher than normal
3
A lack of power
4
A big drop in fuel economy may result
Possible Causes P02EF
1
Dirty fuel injector supplying the number two cylinder
2
Faulty fuel injector
3
Plugged fuel injector
4
Open or short in the fuel injector wiring harness
5
Faulty electrical harness from the PCM to the injector
6
Faulty electrical connector on the fuel injector
7
Loose or corroded fuel injector connector