P0293 Code - Cylinder 11 Contribution/Balance Fault

What Does P0293 Mean?

The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions. When you see P0293 engine fault code on your engine code reader this description will help you.

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What are the common causes of P0293 ?

• Some aftermarket accessories and performance modifications
• A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
• Faulty IMRC actuator relay (if equipped)

How do you troubleshoot P0293 ?

First, you should inspect the electrical connector on your vehicle’s fuel injector. Examine the harness side for pushed out pins or corrosion.

Next, fix any issues you see and add dielectric grease to the connector terminals. You can then reinstall the connector and start the engine. Now you will want to hold a long screwdriver handle to your ear and place the blade of the screwdriver on your car’s injector. Do you hear a ticking noise? If you do not, this means you are not receiving power or the injector has failed to engage. If this is the case, use a wire probe on a voltmeter and probe the red power wire at the injector. Is it showing battery voltage? If not, you have an open in the wiring between the fuel pump relay and the injector. If voltage is present, then the injector is working but is probably clogged with debris and in need of a cleaning. You can clean your injector using a direct fuel injector flush kit, which should be available at an auto parts store or online. Follow the instructions on the kit box, and after you are finished clear the code and start your vehicle. If the rough idle is still present and the code reappears, you will need to replace your fuel injector.

Searches related to P0293 Code - Cylinder 11 Contribution/Balance Fault

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