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P1794 – Mazda DTC

Mazda DTC P1794 – Powertrain Control Module Battery Direct Power Circuit

DTC P1794 meaning on Mazda

Diagnostic Trouble Code (DTC) P1794 on a Mazda indicates an issue with the Powertrain Control Module (PCM) Battery Direct Power Circuit. This code is triggered when the PCM detects a problem with the power supply to its internal circuits.

Mazda DTC P1794 symptoms

Symptoms of DTC P1794 on a Mazda may include:

  • Check Engine Light illuminated on the dashboard
  • Engine running rough or stalling
  • Difficulty starting the vehicle

Mazda DTC P1794 causes

Common causes of DTC P1794 on a Mazda include:

  • Faulty PCM
  • Issues with the battery or charging system
  • Wiring or connection problems in the power supply circuit

Mazda DTC P1794 seriousness

DTC P1794 should be addressed promptly as it can lead to drivability issues and potential damage to other vehicle components if left unresolved.

How to diagnose DTC P1794 on Mazda

To diagnose DTC P1794 on a Mazda, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault codes stored in the PCM.
  2. Inspect the battery and charging system for any issues.
  3. Check the wiring and connections in the PCM Battery Direct Power Circuit for damage or corrosion.

How to fix DTC P1794 on Mazda

To fix DTC P1794 on a Mazda, you can:

  1. Replace the PCM if it is determined to be faulty.
  2. Repair any wiring or connection issues in the power supply circuit.
  3. Ensure the battery and charging system are functioning correctly.

How to erase DTC P1794 on Mazda

To erase DTC P1794 on a Mazda:

  1. Use a diagnostic scanner to clear the fault codes stored in the PCM.
  2. After fixing the underlying issue, clear the codes again to ensure the problem is resolved.

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