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 Abadal 15.9 (CAN) Lack of Acknowledgement From Engine Management
P2018 Citroen Eco Fuel level Sensor Circuit High Input
P2018 Kia Picanto Ii Seatbelt Passenger Pretensioner Circuit Resistance Low on Squib
P2018 Morris Ten Four Cam Calibration Fault
P2018 Cord L Fuel Sender Circuit Short To Battery
P2018 Dodge Daytona Ignition Coil K Primary/Secondary Circuit Malfunction
P2018 Tvr Grantura Power Door Memory Lock Relay Circuit Short To Ground