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U1303 Engine Trouble Code

Meaning of U1303 engine trouble code is a kind of network trouble code and U1303 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,140 and you can't do it yourself unless you're an experienced mechanic.

U1303 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for U1303 code is occuring now you should check U1303 repair processes.
Now don't ask yourself; What should you do with U1303 code ?
The solution is here :

U1303 Possible Solution:

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

U1303 Code Meaning :

U	1	3	0	3
OBD-II Diagnostic Network (U) Trouble Code For Engine	Fuel And Air Metering	Throttle/Pedal Position Sensor/Switch A Circuit Intermittent	Cold Start Injector 1 Malfunction	Exhaust Gas Recirculation Sensor B Circuit High

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

U1303 OBD-II Diagnostic Network (U) Trouble Code Description

U1303 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Main reason For U1303 Code

The reason of U1303 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

U1303 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.

	Example: 0140