P218B Diagnostic Trouble Code

P218B is a kind of OBD-II Diagnostic P-Powertrain 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 P218B diagnostic trouble code may include:

Poor fuel economy
Possible spark knock (detonation / pre-ignition)
Misfire
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
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 :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P218B 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 P218B.

Fortunately, P218B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P218B Trouble Code For Specific Cars

P218B Chevrolet Master EGI Functionality Test Failed
P218B Daewoo Musiro Gauge Drive Current Fault
P218B Royce 1904 Ignition Retard Request Circuit Fault
P218B Morris Cowley Brake Pedal Input Circuit Ground Short
P218B Mazda Rx-2 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P218B Rolls-royce Silver Ghost IAT - B Sensor Intermittent
P218B Fiat Berline Lamp Headlamp High-Beam Circuit Short To Ground