U1218 Engine Error Code

When you check engine light came on code U1218 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the U1218 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on your car models.

U1218 Code Symptoms

U1218 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.

Vehicle Speed Sensor (VSS) Out of Self Test Range Indicates the VSS input signal is out of Self Test range. If the PCM detects a VSS input signal any time during Self Test, a DTC P1501 will be set and the test will abort. Noisy VSS input signal from Radio Frequency Interference/ Electro-Magnetic Interference (RFI/EMI) external sources such as ignition wires, charging circuit or after market equipment. Check for VSS input to be 0 mph when vehicle transmission is in Park.

U1218 OBD-II Diagnostic Network (U) Trouble Code Description U1218 SCP (J1850) Invalid or Missing Data for External Lamps so you have to check ODB-II Engine Error Code list. U1218 Code Review : The reason of U1218 OBD-II Engine Error Code is U1218 SCP (J1850) Invalid or Missing Data for External Lamps.

U1218 Code Dictionary Meaning:

- 1 - MFG - Manufacturer Specific 2 - Computer And Auxiliary Outputs 1 - IC Circuit High Voltage 8 - Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

How long can you drive with a U1218 code ?

If your vehicle is displaying a U1218 OBD2 error code but is still running and driving normally, it means that the issue might not be immediately critical or causing immediate harm to the vehicle. However, it's important to address the issue as soon as possible for several reasons:

• Potential for Worsening
• Decreased Fuel Efficiency
• Emissions Testing Compliance
• Risk of Further Damage
• Safety Concerns
• Legal Considerations