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U1077 Engine Code Repair

Meaning of U1077 engine trouble code is a kind of network trouble code and U1077 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.

U1077 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for U1077 code is occuring now you should check U1077 repair processes.
Now don't ask yourself; What should you do with U1077 code ?
The solution is here :

U1077 Possible Solution:

U1077 Engine

The firing order is an important part of the overall design of the engine and is determined during the design of the engine to eliminate as much engine vibration as possible. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run. The firing order for a particular engine is typically found in the repair manual specific to that model.

U1077 Code Meaning :

U
OBD-II Diagnostic Network (U) Trouble Code For Engine

1
Fuel And Air Metering

0
Injector Circuit Malfunction - Cylinders

7
Cylinder 4 Contribution/Balance Fault

7
Ignition Coil A Primary/Secondary Circuit Malfunction

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

U1077 OBD-II Diagnostic Network (U) Trouble Code Description

U1077 engine trouble code is about Ignition Coil A Primary/Secondary Circuit Malfunction.

Main reason For U1077 Code

The reason of U1077 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

U1077 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.