P1375 – OBD-II DTC

OBD-II DTC P1375 – Insufficient RMP Increase During Spark Test

DTC P1375 meaning

DTC P1375 refers to “Insufficient RPM Increase During Spark Test.” This diagnostic trouble code indicates that the engine control module (ECM) has detected that the engine’s RPM did not increase as expected during a spark test. This test is typically performed to assess the ignition system’s performance and ensure that the engine is capable of producing the necessary power for proper operation.

DTC P1375 symptoms

Common symptoms associated with DTC P1375 may include:

• Engine misfires
• Rough idling
• Decreased engine performance
• Difficulty starting the engine
• Check Engine Light (CEL) illuminated

DTC P1375 causes

Several factors can lead to the triggering of DTC P1375, including:

• Faulty ignition coils
• Worn or damaged spark plugs
• Issues with the fuel delivery system
• Vacuum leaks
• Faulty sensors (e.g., crankshaft position sensor)
• ECM software issues

DTC P1375 seriousness

DTC P1375 can indicate a significant issue with the ignition system, which may lead to poor engine performance and increased emissions. If left unaddressed, it can result in further engine damage or failure. Therefore, it is important to diagnose and repair the underlying issues promptly to ensure the vehicle operates efficiently and reliably.

How to diagnose DTC P1375

To diagnose DTC P1375, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC P1375.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the ignition system components, including spark plugs and ignition coils.
4. Test the fuel delivery system for proper operation.
5. Check for vacuum leaks that could affect engine performance.
6. Examine the crankshaft position sensor and other relevant sensors.
7. Review the ECM software for any updates or known issues.

How to fix DTC P1375 step-by-step instructions

To fix DTC P1375, follow these step-by-step instructions:

1. Replace any faulty ignition coils or spark plugs.
2. Repair or replace any damaged fuel delivery components.
3. Seal any vacuum leaks found during inspection.
4. Test and, if necessary, replace the crankshaft position sensor.
5. Update the ECM software if applicable.
6. Clear the DTC using an OBD-II scanner.
7. Perform a road test to ensure the issue is resolved and monitor for any reoccurrence of the code.

How to erase DTC P1375

To erase DTC P1375, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Access the scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the engine to verify that the code does not return.

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