C3346 Toyota Corolla OBD Code

OBD/2 C3346 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.

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.

C3346 Toyota Corolla Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C3346 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If air bag driver circuit short to ground - loop #2 so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the air bag driver circuit short to ground - loop #2.

Common Causes of Toyota Corolla C3346 OBD2 Code

A common cause of code C3346 is the failure of Air Bag Driver Circuit Short to Ground - Loop #2, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Erratic camshaft position due to low oil pressure
Fuel pressure
Open or short in the CMP sensor circuits

C3346 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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C3346 Toyota Corolla OBD Code

C3346 Toyota Corolla Error Code Repair Process :

Common Causes of Toyota Corolla C3346 OBD2 Code

C3346 code for other Toyota cars