C3493 Mitsubishi Concept OBD Code

OBD/2 C3493 error code description and symptoms.

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.

C3493 Mitsubishi Concept Error Code Repair Process :

If your passenger door disarm switch ckt 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 C3493 and engine control unit are in charge of monitoring a bunch of different passenger door disarm switch ckt short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mitsubishi Concept C3493 OBD2 Code

A common cause of code C3493 is the failure of Passenger Door Disarm Switch ckt Short to Ground, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Damaged ECM
Foreign matter caught in fuel filler cap
Starting system circuit Dead (Weak) battery

C3493 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.

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

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C3493 Mitsubishi Concept OBD Code

C3493 Mitsubishi Concept Error Code Repair Process :

Common Causes of Mitsubishi Concept C3493 OBD2 Code

C3493 code for other Mitsubishi cars