P218F Code:

OBD-II Diagnostic Powertrain (P) Trouble Code

Possible Cause

Possible causes of P218F include a faulty oxygen sensor, faulty electrical connector at the oxygen sensor, faulty or shorted wiring in the oxygen sensor circuit, a blown fuse for the oxygen sensor (if applicable), low or excessive fuel pressure, a vacuum leak on the engine, excessive exhaust leaks, or a faulty PCM.

Common Symptoms

  1. For example: The PCM receives an input signal from the vehicle speed sensor
  2. Test the wiring and connectors at the fuel shutoff valve to make sure that voltage and ground readings are near battery voltage
  3. This signal is systematically forwarded to affected control modules that utilize the data to accomplish various other tasks
  4. The sensor is of the electro magnetic design and uses a reluctor ring (or a specialized set of splines) on the input shaft as reference points

Similar Problems

Transmission
TP Sensor Learn Not Complete
TFP Valve Position Switch-Drive Without Drive Ratio

P218F Troubleshooting

There will also be noise coming from the turning radiator fan and the belt that turn the fan blade. There are a multiple of other belt driven devices under the hood. An engine pulley is mounted to the engine of an automobile and drives all belts. Your car probably has a serpentine belt which is a continuous belt used to drive multiple peripheral devices. Parts or components should not be replaced with reference to only a P218F DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

How to turn off P218F check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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