The days of carburetors are long gone. This is especially true if the issue is intermittent, as these can be pesky to track down without the proper tools. Fuel injection offers more precise control over the fuel distribution. If you have any doubt as to repairs on your vehicle, please contact your technician. After that, the current is reduced to the amount needed to hold the injector open. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. How serious is the P0008 code? Typically, there is always battery power at one of the two injector terminals.
Make sure you have the correct wire. Verify the P0008 code returns or the symptoms exist. One of the main components in a modern fuel system is the fuel injector. Attach one end of your test light to ground and touch the other to the B+ pin on the injector connector — the tight light should illuminate. Look up the other , please use the search box. The code typically means that the timing is not aligned thus causing performance issues.
Using a scope, you can view a waveform pattern of the injector circuit operation. The code will illuminate the Check Engine Light and possibly reduce engine performance. The manufactures resistance value specifications can be found in the vehicle repair manual. Checking the injector with a Courtesy: dylansautotronicsblog. What causes the P0008 code? Other codes, such as misfire codes, often accompany code P0208. Attach one end of your test light to ground and touch the other to the B+ pin on the injector connector — the tight light should illuminate. Visually check the connector for damage or broken wires.
So, begin your diagnosis by visually inspecting the sensor and its connection. On the other hand, the peak and hold design allows maximum current to flow just long enough to open the injector. It says this is an open in the power supply to the injector rails. If not, consult the factory wiring diagram and repair the power side of the circuit as necessary. The easiest way to check if the control circuit to the injector is good is by using a noid light. The code is most commonly found in Chevrolet, Subaru, and Suzuki vehicles, although I have seen it in other makes.
Many problems can easily be found in the harness and connectors. Common Causes The most common cause of this code is damage to wiring caused by wildlife. Injector circuit or injector coil tests may be normal until the engine reaches operating temperature. This will provide a look and see distant generalization of what you may be getting into and some live experiences of those who did. Should I replace the relay, I have checked the harness and connections and found no problem.
This completes the circuit and fuel is sprayed into the cylinder. At least open a window on your way to the shop. If you have access to an injector tester, activate the injector and see if it operates. Operating information and commands are exchanged among the modules. Based upon the results of the testing, possible clearing of the code, and a road test while monitoring the data, further diagnosis may be required. The pulses tell technicians much more than just checking for battery voltage at the cylinder 8 injector itself. How do you troubleshoot code P0208? The injector seems to have the correct resistance.
Removal of the front timing cover of the engine may be required to verify the timing. On higher mileage vehicles, I usually suspect the timing chain stretching or the timing chain guides wearing down allowing the timing to change slightly. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. Oscilloscope peak and hold injector waveform pattern Courtesy: Motor Age Training Oscilloscope saturated waveform pattern Courtesy: Motor Age Training In addition to electrical problems, injectors can experience mechanical failure and become clogged. Clean and dry the connectors as needed. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. Injector pulse duration is determined by the measured rail pressure and the target injection fuel into each cylinder.
When the engine is cranked, the test light should illuminate. It should have 10 volts or more. If the resistance is excessively low or high it will set this code. Now don't ask yourself; What should you do with P0208 code? What repairs can fix the P0208 code? Attach one end of your test light to battery power and the other to ground side of the injector connector. Talked to the owner of the shop where this vehicle has been getting all maintenance and repairs done for the last 4+ years, and he mentions that there is a good chance I will be doing injectors.