B1864 Diagnostic Trouble Code

B1864 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 B1864 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

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. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code B1864 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 B1864.

Fortunately, B1864 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1864 Trouble Code For Specific Cars

B1864 Monteverdi Berlinetta Battery Power Relay Circuit Short To Battery
B1864 Volkswagen Voyage
B1864 Toyota Previa Park / Neutral Switch Input Circuit Low
B1864 Mitsubishi Model A Aux A/C Control Switch Reference Circuit Short to Ground
B1864 Honda N360 RADIO PRESENT SWITCH Ckt Failure
B1864 Smart Coupe Lamp ABS Warning Output Circuit Short To Ground
B1864 Daewoo Maepsy-na Gate Select Position Circuit High