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U1647 Engine Code Repair

Meaning of U1647 engine trouble code is a kind of network trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

U1647 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 U1647 code is occuring now you should check U1647 repair processes.
Now don't ask yourself; What should you do with U1647 code ?
The solution is here :

U1647 Possible Solution:

U1647 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.

U1647 Code Meaning :

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

1
Fuel And Air Metering

6
Fuel Composition Sensor Circuit Malfunction

4
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

7
Ignition Coil A Primary/Secondary Circuit Malfunction

Regarding the U1647 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

U1647 OBD-II Diagnostic Network (U) Trouble Code Description

U1647 engine trouble code is about Ignition Coil A Primary/Secondary Circuit Malfunction.

Main reason For U1647 Code

The reason of U1647 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

U1647 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.