P1299 – OBD-II DTC

OBD-II DTC P1299 – Injector High Side Open – Bank 2/Target idle not reached

DTC P1299 meaning

DTC P1299 indicates a problem with the fuel injector circuit on Bank 2 of the engine. Specifically, it signifies that there is an open circuit condition on the high side of the injector, which prevents it from receiving the necessary voltage to operate. Additionally, the vehicle’s engine control module (ECM) has detected that the target idle speed has not been reached, suggesting that the engine is not running smoothly or efficiently.

DTC P1299 symptoms

Common symptoms associated with DTC P1299 may include:

• Rough idling or stalling of the engine
• Decreased engine performance
• Increased fuel consumption
• Check Engine Light (CEL) illuminated
• Difficulty starting the engine

DTC P1299 causes

Several factors can lead to the triggering of DTC P1299, including:

• Faulty fuel injector on Bank 2
• Open or shorted wiring in the injector circuit
• Defective engine control module (ECM)
• Issues with the fuel supply system
• Vacuum leaks affecting engine performance

DTC P1299 seriousness

DTC P1299 is considered a serious issue as it can lead to poor engine performance and increased emissions. If left unaddressed, it may result in further damage to the engine or fuel system components. It is advisable to diagnose and repair the issue promptly to ensure the vehicle operates efficiently and reliably.

How to diagnose DTC P1299

To diagnose DTC P1299, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC P1299.
2. Inspect the wiring and connectors related to the fuel injector on Bank 2 for any visible damage or corrosion.
3. Test the fuel injector for proper resistance and operation using a multimeter.
4. Check for any vacuum leaks in the intake system that could affect idle speed.
5. Examine the fuel supply system for proper pressure and flow.
6. Clear the DTC and perform a road test to see if the code reappears.

How to fix DTC P1299 step-by-step instructions

To fix DTC P1299, follow these step-by-step instructions:

1. Inspect and repair any damaged wiring or connectors in the injector circuit.
2. Replace the faulty fuel injector on Bank 2 if it is not functioning correctly.
3. Address any vacuum leaks found during the diagnostic process.
4. Ensure the fuel supply system is functioning properly, including checking the fuel pump and filter.
5. Recheck the ECM for any faults and update or replace it if necessary.
6. Clear the DTC using an OBD-II scanner and perform a test drive to confirm the issue is resolved.

How to erase DTC P1299

To erase DTC P1299, 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. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to verify that the code does not reappear.

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