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U1266 Engine Code Repair

Meaning of U1266 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.

U1266 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 U1266 code is occuring now you should check U1266 repair processes.
Now don't ask yourself; What should you do with U1266 code ?
The solution is here :

U1266 Possible Solution:

U1266 Engine

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

U1266 Code Meaning :

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

1
Fuel And Air Metering

2
Fuel Rail/System Pressure - Too High

6
Cylinder 1 Injector Circuit Low

6
Crankshaft Position Sensor B Circuit Malfunction

Regarding the U1266 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.

U1266 OBD-II Diagnostic Network (U) Trouble Code Description

U1266 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Main reason For U1266 Code

The reason of U1266 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

U1266 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.