B0466 Diagnostic Trouble Code

B0466 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 B0466 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

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. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code B0466 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 B0466.

Fortunately, B0466 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0466 Trouble Code For Specific Cars

B0466 Renault Wind HO2S Heater Resistance (Bank 1 Sensor 1)
B0466 Mcc Silverpulse A/C Refrigerant Pressure Sensor Circuit Low Input
B0466 Gmc Sonoma Park Brake Switch # 1 Released Circuit Short to Gnd
B0466 Toyota Fxs Oil Change Lamp Circuit Short To Ground
B0466 Nissan Pathfinder Coolant Temperature Circuit Malfunction
B0466 Smart Crossblade Lamp Adaptive Damping Warning Circuit Failure
B0466 Hyundai I20