C2518 Diagnostic Trouble Code

C2518 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 C2518 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code C2518 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 C2518.

Fortunately, C2518 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2518 Trouble Code For Specific Cars

C2518 Audi A8 ANTI THEFT HORN OUTPUT CIRCUIT Short to Gnd
C2518 Italdesign Legram SCP (J1850) Lack of Acknowledgment for Audible Warnings
C2518 Fiat Berline Lamp Headlamp High-Beam Circuit Short To Ground
C2518 Hyundai Sonata 7
C2518 Volkswagen Polo 4 Rotor Control Fault
C2518 Hyundai Clix SCAIR Solenoid Circuit Malfunction
C2518 Panhard Et Levassor X Driver Power Window One Touch Window Relay Circuit Failure