U1789 Engine Trouble Code
Meaning of U1789 engine trouble code is a kind of network trouble code and U1789 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.
U1789 Fault Symptoms :
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If one of these reasons for U1789 code is occuring now you should check U1789 repair processes.
Now don't ask yourself; What should you do with U1789 code ? The solution is here : |
U1789 Possible Solution:
Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all. |
U1789 Code Meaning :
U | 1 | 7 | 8 | 9 |
---|---|---|---|---|
OBD-II Diagnostic Network (U) Trouble Code For Engine | Fuel And Air Metering | Fuel Rail Pressure Sensor Circuit Malfunction | Ignition/Distributor Engine Speed Input Circuit Malfunction | Reverse Input Circuit |
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.
U1789 OBD-II Diagnostic Network (U) Trouble Code DescriptionU1789 engine trouble code is about Reverse Input Circuit.Main reason For U1789 CodeThe reason of U1789 OBD-II Engine Trouble Code is Fuel Rail Pressure Sensor Circuit Malfunction. |
U1789 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.