C3787 Trouble Code

View C3787 obd/2 error code description and symptoms. C3787 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.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

C3787 Error Code Repair Process :

For traction control valve rear circuit open check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C3787 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks traction control valve rear circuit open with your car's computers to find out exactly what's prompting the light to turn on.

C3787 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 C3787

A common cause of code C3787 is the failure of Traction Control Valve Rear Circuit Open, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Exhaust gas leaks
Fuel injector leaks
Clogged or faulty fuel injector (s)

C3787 code for all cars

You can view according C3787 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3787 Great Wall Florid

+C3787 Kia Rio Ii

+C3787 Hyundai I20

+C3787 Nissan Trailrunner

+C3787 Nissan Langley

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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