C3407 Trouble Code

View C3407 obd/2 error code description and symptoms. C3407 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.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C3407 Error Code Repair Process :

If your mirror switch assembly circuit short to ground 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 C3407 and engine control unit are in charge of monitoring a bunch of different mirror switch assembly circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

C3407 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 C3407

A common cause of code C3407 is the failure of Mirror Switch Assembly Circuit Short to Ground, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Faulty Fuel injector
Ignition coils harness is open or shorted
Ignition coils circuit poor electrical connection

C3407 code for all cars

You can view according C3407 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3407 Wills Sainte Claire B

+C3407 Mitsubishi 3000

+C3407 Citroen Berlingo

+C3407 Hyundai Elantra

+C3407 Cadillac 6.5 Hp

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