B1618 Diagnostic Trouble Code

B1618 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 B1618 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code B1618 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 B1618.

Fortunately, B1618 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1618 Trouble Code For Specific Cars

B1618 Land Rover Series Iii Switch Test Signal Failure
B1618 Morgan Aero B-pillar Power Sliding Door Open/Close Switch Input Ckt Short to Gnd
B1618 Ascari Kz1 Air Suspension RF Air Spring Solenoid Output Circuit Open
B1618 Mazda Rx-2 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
B1618 Mercedes-benz 500 Air Bag Safing Sensor Output Circuit Short To Battery
B1618 Alpine A108-904 Air Bag Passenger Circuit Failure
B1618 Volvo Xc70 Ii SCP (J1850) Invalid or Missing Data for Function Read Engine Torque