B1475 Diagnostic Trouble Code

B1475 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 B1475 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

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 the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code B1475 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 B1475.

Fortunately, B1475 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1475 Trouble Code For Specific Cars

B1475 Porsche Panamericana Fuel Pump Speed Control Circuit Malfunction
B1475 Allard Monte Carlo Air Bag Driver Circuit Short To Ground
B1475 Studebaker Golden Hawk Lamp Turn Signal Right Circuit Open
B1475 Dodge Omni Ignition Run Circuit Short To Battery
B1475 Chrysler Lhs Evaporative Emission Control System Pressure Sensor Range/Performance
B1475 Volkswagen Ea RF LAMP LOW BEAM CIRCUIT Short to Battery
B1475 Hyundai Xg350 SCP (J1850) Invalid or Missing Data for Engine Systems Other