U20A3 BMW Fault Code

Description:

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal.

The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

U20A3 Code Symptoms :

If your U20A3 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 U20A3 and engine control unit are in charge of monitoring a bunch of different , and if they get a reading that's a little out of whack, up pops the check engine light.

Diagnosis And Repairing U20A3

U20A3 OBD 2 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

How to fix U20A3 code ?

• Faulty Air Flow Meter
• Faulty spark plug (s)
• 1Camshaft Position Sensor circuit poor electrical connection
• Insufficient cylinders compression

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code U20A3, so consult the manual to locate the brake fluid reservoir.

Bear in mind that a low fluid level can set code U20A3 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.