B0149 Trouble Code

OBD/2 B0149 error code description and symptoms.

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.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

Difficulty Level (Expert)
Level
Repair Time (60 Min.)
Time
Cost Prediction : $ 25-45

B0149 Error Code Repair Process :

For knock sensor 2 circuit high input (bank 2) check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. B0149 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks knock sensor 2 circuit high input (bank 2) with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool B0149 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 B0149

A common cause of code B0149 is the failure of Knock Sensor 2 Circuit High Input (Bank 2), but there are several other possible causes as well, such as ;

B0149 code for all cars

You can view according B0149 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B0149 Chevrolet Trailblazer +B0149 American Traveler +B0149 Jordan J +B0149 Daewoo Kalos +B0149 Puma Mini
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