B0427 Trouble Code

View B0427 obd/2 error code description and symptoms. B0427 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.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

Difficulty Level (Expert)
Level
Repair Time (35 Min.)
Time
Cost Prediction : $ 40-75

B0427 Error Code Repair Process :

If your engine coolant temperature (ect) sensor circuit intermittent low voltage/iat - b circuit low input 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 B0427 and engine control unit are in charge of monitoring a bunch of different engine coolant temperature (ect) sensor circuit intermittent low voltage/iat - b circuit low input, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool B0427 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.

Common Causes of B0427

A common cause of code B0427 is the failure of Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input, but there are several other possible causes as well, such as ;

B0427 code for all cars

You can view according B0427 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0427 Alvis Firefly +B0427 Avanti Studebaker +B0427 Maybach W3 +B0427 Bmw 318 +B0427 Packard 120

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