P3742 Trouble Code

View P3742 obd/2 error code description and symptoms. P3742 engine photo

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 P3742 as an indication of a hard fault.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P3742, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P3742 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

Difficulty Level (Soso)
Level
Repair Time (50 Min.)
Time
Cost Prediction : $ 50-100

P3742 Error Code Repair Process :

OBD P3742 code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components and air suspension front pneumatic failure, while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits. Given the robust nature of today's emissions control components, it is entirely possible for an individual component to P3742 malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components (like the catalyst) can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction. In addition, OBD also monitors for P3742 and other malfunctions in the fuel system problems that traditional tailpipe tests were not designed to identify. Most state and local areas also include a gas cap pressure test as part of an emission inspection.

Wrench Tool P3742 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P3742

A common cause of code P3742 is the failure of Air Suspension Front Pneumatic Failure, but there are several other possible causes as well, such as ;

P3742 code for all cars

You can view according P3742 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3742 Lagonda 42 Hp +P3742 Nsu Ro80 +P3742 Maserati Mistral +P3742 Ford Gran Torino +P3742 Bentley Turbo

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

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