P1354 - FAULT CODE - OBD2

POST UPDATED IN January, 2023

P1354 Code failures by brands

P1354 BUICK, CADILLAC, CHEVROLET, GMC: IGNITION CONTROL MODULE OUTPUT HIGH/PULSE DETECTED WHEN GROUNDED CYLINDER 4

Description of DTC code P1354

The Ignition Control Module (ICM) controls the electrical power and ground circuits. Various circuits between the ICM and the Powertrain Control Module (PCM) control timing signals from the IC (Ignition Control), the medium resolution engine, the low-resolution engine, and a low reference.

The 3X signals are sent from the ICM to the Powertrain Control Module, in addition to controlling the timing advance at engine start. If the Powertrain Control Module takes the second 3X signal, or if this controller applies the 5 volts in the timing signal circuit, the timing advance is switched to PCM control.

When the engine is started, the ICM monitors the timing signal provided by the CKP Sensor, which determines the cylinder torque and allows the coil to begin its firing sequence.

When the P1354 OBD2 fault code is set, it is because the ICM has detected a short when the ground signal was sent to engine cylinder 4.

Symptoms of fault code P1354

Causes of OBD2 P1354

The P1354 OBDII diagnostic code is set for the following reasons:

  • The connectors or respective cables of the Ignition Control Module may be in poor condition.
  • The ICM circuit may be shorted.
  • The ICM may be faulty.

Possible solutions of the DTC code P1354

To troubleshoot DTC P1354 OBD2, take into account the following suggestions:

  • Locate the source of information to access the TSBs.
  • Check there are no deficiencies in the wiring or connectors of the Ignition Control Module. If you discover common damage, make the appropriate corrections.
  • Verify that the ICM control circuit is not shorted due to bad connections. The voltages obtained in these tests should match those indicated on the vehicle's information source. Correct if deficiencies are found.
  • If no deficiencies are found in the components and electrical connections, there may be a faulty

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