B3973 Trouble Code

OBD/2 B3973 error code description and symptoms.

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code B3973

Circuit High Input codes like B3973 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

Difficulty Level (Easy)
Level
Repair Time (45 Min.)
Time
Cost Prediction : $ 80-120

B3973 Error Code Repair Process :

If your wiper hi/low speed relay coil circuit short to ground 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 B3973 and engine control unit are in charge of monitoring a bunch of different wiper hi/low speed relay coil circuit short to ground, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool B3973 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 B3973

A common cause of code B3973 is the failure of Wiper Hi/Low Speed Relay Coil Circuit Short To Ground, but there are several other possible causes as well, such as ;

B3973 code for all cars

You can view according B3973 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B3973 Proton Putra +B3973 Bugatti Type+18 +B3973 Maserati MC12 +B3973 Wills Sainte Claire A +B3973 Chrysler CCV
Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.
Copyright 2017 © All rights reserved