how to fix P0174 code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Visual inspection tools, smoke machine (if available).
• Inspect all vacuum hoses and connections for cracks or disconnections.
• If vacuum leaks are found, replace the damaged hoses or reattach any loose connections.

3. Clean or Replace MAF Sensor

• Tools Required: Torx screwdriver, MAF cleaner.
• Locate the MAF sensor in the air intake duct.
• Disconnect the electrical connector and remove the sensor.
• Clean the sensor using MAF cleaner and allow it to dry completely. If damaged, replace the MAF sensor.
• Reinstall the sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Locate the fuel pressure test port on the fuel rail.
• Attach the fuel pressure gauge and turn the ignition to the "ON" position without starting the engine. Check the pressure reading against manufacturer specifications.
• If the pressure is low, inspect the fuel pump and filter for faults and replace if necessary.

5. Inspect Fuel Injectors

• Tools Required: Multimeter, injector cleaner.
• Disconnect the electrical connectors from each fuel injector.
• Use a multimeter to check the resistance of each injector; it should be within the manufacturer's specifications.
• If an injector is faulty, replace it. Consider cleaning the injectors with a professional cleaning kit if they appear dirty.