U1055 Engine Code Repair

U1055 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 $1,300 and you can't do it yourself unless you're an experienced mechanic.

When you check car engine light came on code U1055 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the U1055 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U1055 Fault Symptoms :

U1055 Possible Solution :

Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.

U1055 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.