P3940 Trouble Code

View P3940 obd/2 error code description and symptoms. P3940 engine photo

Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN Damaged IMRC actuator Damaged PCM An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

P3940 Error Code Repair Process :

The rule of P3940 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 reserved - tbd. Likewise, overriding the OBD P3940 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.

P3940 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 P3940

A common cause of code P3940 is the failure of Reserved - TBD, but there are several other possible causes as well, such as ;

1Camshaft Position Sensor circuit poor electrical connection
Camshaft Position Sensor harness is open or shorted
Exhaust gas leaks
EVAP system hose leaking

P3940 code for all cars

You can view according P3940 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3940 Packard Custom

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

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