B3548 Trouble Code

View B3548 obd/2 error code description and symptoms. B3548 engine photo

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

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 : $ 70-120

B3548 Error Code Repair Process :

For fuel demand command signal circuit malfunction 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. B3548 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 fuel demand command signal circuit malfunction with your car's computers to find out exactly what's prompting the light to turn on.

Wrench Tool B3548 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 B3548

A common cause of code B3548 is the failure of Fuel Demand Command Signal Circuit Malfunction, but there are several other possible causes as well, such as ;

B3548 code for all cars

You can view according B3548 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3548 Daihatsu Fourtrak +B3548 Talbot Sunbeam-lotus +B3548 Tvr V8 +B3548 Bugatti Type 17 +B3548 Tatra T107

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