C3286 Diagnostic Trouble Code

C3286 is a kind of OBD-II Diagnostic C-Chassis 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 C3286 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code C3286 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 C3286.

Fortunately, C3286 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3286 Trouble Code For Specific Cars

C3286 Mercedes-benz 260 Air Bag Passenger Circuit Short To Battery
C3286 Mitsubishi Dangan Audio Steering Wheel Switch Circuit Fault
C3286 Chevrolet Montana 2 EGI Mini - MAF Failed Short Circuit
C3286 Chevrolet Ssr Electrodrive Fan 2 Operational Failure (Passenger Side)
C3286 Nissan 240 Chime Input Request Circuit Open
C3286 Mercedes-benz Bionic Air Conditioner Refrigerant Charge Loss
C3286 Geely Haoqing O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)