C2790 Trouble Code

View C2790 obd/2 error code description and symptoms. C2790 engine photo

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

Difficulty Level (Soso)
Level
Repair Time (30 Min.)
Time
Cost Prediction : $ 80-120

C2790 Error Code Repair Process :

If your door handle right front circuit open check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C2790 and engine control unit are in charge of monitoring a bunch of different door handle right front circuit open, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool C2790 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C2790

A common cause of code C2790 is the failure of Door Handle Right Front Circuit Open, but there are several other possible causes as well, such as ;

C2790 code for all cars

You can view according C2790 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C2790 Messerschmitt Tg +C2790 Chevrolet Kalos +C2790 Hummer H2 +C2790 Muntz Jet +C2790 Lexus Gs

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