C3748 Nissan 370z OBD Code

OBD/2 C3748 error code description and symptoms.

EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on.
The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to PWR VREF open to D.P.F. EGR sensor D.P.F. EGR sensor downstream hose off or plugged EGRVR circuit open to PCM VPWR open to EGRVR solenoid D.P.F. EGR sensor hoses both off D.P.F. EGR sensor hoses reversed Damaged EGR orifice tube Damaged EGRVR solenoid Damaged PCM Perform KOER self-test and look for DTC C3748 as an indication of a hard fault.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C3748 Nissan 370z Error Code Repair Process :

If your abs inlet valve coil rr circuit short to battery 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 C3748 and engine control unit are in charge of monitoring a bunch of different abs inlet valve coil rr circuit short to battery, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Nissan 370z C3748 OBD2 Code

A common cause of code C3748 is the failure of ABS Inlet Valve Coil RR Circuit Short To Battery, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Damaged camshaft position (CMP) sensor
Incorrect fuel filler cap used
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

C3748 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.

About Us | Contact | Privacy

C3748 Nissan 370z OBD Code

C3748 Nissan 370z Error Code Repair Process :

Common Causes of Nissan 370z C3748 OBD2 Code

C3748 code for other Nissan cars