P2340

DTC P2340, sometimes indicated as P234000 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the ignition system causing cylinder 5 above knock threshold.

This DTC code is caused by an engine knocking noise that is above the knock threshold. When this code is set, the knock sensor is detecting a knocking noise that is above the normal threshold. This noise could be caused by a variety of issues, such as a faulty engine component, low fuel level, or a misfire.
If this code is set, the first step is to diagnose the cause of the knocking noise. Once the cause is identified, the appropriate repairs should be made to fix the issue. If the knocking noise is due to a faulty engine component, then the component should be replaced. If the knocking noise is due to a low fuel level, then the fuel level should be corrected. If the knocking noise is due to a misfire, then the misfire should be corrected.

• P2340: 5 Above Knock Threshold
• P2340: Cylinder 5 Above Knock Threshold
• P2340: Cylinder 5 – above knock threshold
• P2340 00: Cylinder 5 - above knock threshold