Description of DTC code P2302

The ignition coil current flow is provided by the Powertrain Control Module (PCM) through a switched ground signal, which comes from the coil driver. Once the coil driver is turned on, the current is immediately stored until it reaches a maximum value, which is determined by the inductance and resistance of the coil. After the current is turned off, a secondary high voltage surge is created in the magnetic field, which is why the spark plug is triggered.

This high voltage surge creates a return voltage to the PCM, which uses it to perform ignition diagnostics. The ignition system is constantly monitored by the PCM for proper ignition performance. When a voltage short is detected in the secondary circuit of the ignition coil "A", the DTC P2302 OBDII code is set.

Symptoms of fault code P2302

  • Check Engine light illuminated.
  • Engine misfires.
  • Reduced engine power.
  • Fuel consumption increases.

Causes of OBD2 P2302

The factors for which the P2302 OBD2 diagnostic code is stored are:

  • Perhaps the spark plug or the plug wiring is defective.
  • The ignition coil harness may have a short circuit.
  • The ignition coil "A" may be faulty.

Possible solutions of the DTC code P2302

To troubleshoot problems related to the P2302 OBDII fault code you should do the following:

  • Perform a visual inspection of all the cables related to the system. You should repair or replace any of these that have obvious damage.
  • Verify that the spark plug wires and plugs are in good condition. Make any necessary corrections.
  • Check that the signal and ignition coil resistance is within the parameters established by the manufacturer. If the values obtained do not meet the requirements, proceed to replace the coil.

Codes related to P2302

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