P2018 Diagnostic Trouble Code

P2018 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 P2018 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P2018 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 P2018.

Fortunately, P2018 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2018 Trouble Code For Specific Cars

P2018 Ssangyong Actyon LAMP DOME OUTPUT Circuit Failure
P2018 Bmw 118 Calibration Resistor Out Of Range
P2018 Kia Kee Seat Track Position Switch Circuit Resistance Out of Range
P2018 Holden Premier Power Supply Sensor Circuit Short To Battery
P2018 Alvis Speed Air Flow Blend Door Driver Circuit Failure
P2018 Pininfarina 33 Engine Position System Performance (Bank2)
P2018 Vauxhall Corsa Pressure Control Solenoid "B" Short Circuit