P0443 Code:

OBD-II Diagnostic Powertrain (P) Trouble Code

Possible Cause

By far the most common cause of thisP0443code is from worn or defective transmission shifter components. Other causes may include a defective range sensor, open, shorted, corroded, or otherwise damaged wiring and/or electrical connectors.

Common Symptoms

  1. Disconnecting and testing every single pin of the CAN bus could prove to be extremely time and cost prohibitive
  2. As the input shaft is turned (by the engine) the electro magnetic input/turbine speed sensor uses the spaces between the splines to provide voltage signal interruptions in the circuit
  3. This signal is systematically forwarded to affected control modules that utilize the data to accomplish various other tasks
  4. Several tools will be instrumental in successfully diagnosing this code

Similar Problems

Ignition System Or Misfire
IC Circuit High Voltage
A/C System High Pressure High Temperature

P0443 Troubleshooting

If this is the case with the code, you will be hearing very loud noises, like explosions, from the rear of the vehicle upon acceleration. Firstly check the carburetor to ensure that the fuel and air combination are properly balanced. If these settings are correct, then thoroughly inspect the distributor cap for any cracks or hairline splits, as this can produce a backfire. Move on to the spark plugs and ensure that they are clean and undamaged and inspect the engine gaskets for any sign of damage, as they are responsible for ensuring the correct gas exchange within the engine. P0443 OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

How to turn off P0443 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

EngineTroubles.com Logo

Copyright © 2017 | http://www.EngineTroubles.com | All Rights Reserved.