U3543 Trouble Code

View U3543 obd/2 error code description and symptoms. U3543 engine photo

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

U3543 Error Code Repair Process :

The scent may U3543 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such U3543, so if the inside of your car iat - b circuit malfunction/ exhaust gas recirculation closed position performance as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

U3543 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Common Causes of U3543

A common cause of code U3543 is the failure of IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
Faulty TCM or TCM programming
Faulty spark plug (s)
Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted

U3543 code for all cars

You can view according U3543 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U3543 Chevrolet Caprice

+U3543 Mg Rv9

+U3543 Aston Martin Vanquish

+U3543 Bmw Z3

+U3543 Honda Mobilio

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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