B2266 Diagnostic Trouble Code

B2266 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a B2266 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Reduction in engine performance, especially at low RPM levels

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code B2266 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before B2266.

Fortunately, B2266 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2266 Trouble Code For Specific Cars

B2266 Mazda Nextourer 2-3 Shift Malfunction
B2266 Alfa Romeo 1750 ABS Power Relay Output Circuit Failure
B2266 Toyota Curren O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
B2266 Maserati Barchetta Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
B2266 Arab 2-litre Air Suspension LR Air Spring/Shock Solenoid Output Circuit Open
B2266 Fiat Strada Left Front Center Sensor Circuit Failure
B2266 Brutsch Avolette Cruise Control Off Signal Malfunction