U228A Trouble Code

View U228A obd/2 error code description and symptoms. U228A engine photo

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 U228A

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.

U228A Error Code Repair Process :

If your vehicle failed a U228A test and the U228A Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses speed wheel sensor lr circuit open a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look speed wheel sensor lr circuit open: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

U228A 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 U228A

A common cause of code U228A is the failure of Speed Wheel Sensor LR Circuit Open, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty ignition coil (s)
Intake Valve Timing Control Solenoid Valve circuit poor electrical connection
Continuous oil flow to the VCT piston chamber

U228A code for all cars

You can view according U228A DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U228A Chrysler Centura

+U228A Ginetta G25

+U228A Chevrolet Astrovette

+U228A Mg Rv14

+U228A Jaguar Xe

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