B3723 Volkswagen Jetta OBD Code

OBD/2 B3723 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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code B3723, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code B3723 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

B3723 Volkswagen Jetta Error Code Repair Process :

The rule of B3723 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of transmission 4wd mode select return input circuit failure. Likewise, overriding the OBD B3723 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Volkswagen Jetta B3723 OBD2 Code

A common cause of code B3723 is the failure of Transmission 4WD Mode Select Return Input Circuit Failure, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Exhaust tube
Faulty spark plug (s)
Oil Control Valve (OCV) circuit is open or shorted

B3723 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

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

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B3723 Volkswagen Jetta OBD Code

B3723 Volkswagen Jetta Error Code Repair Process :

Common Causes of Volkswagen Jetta B3723 OBD2 Code

B3723 code for other Volkswagen cars