how do I fix the P0174 code on my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Inspect and Replace Faulty Components

A. Inspect Air Intake System

• Check for any visible cracks or disconnections in the air intake hoses.
• If any damage is found, replace the affected hoses with OEM parts.

B. Clean or Replace MAF Sensor

• Remove the MAF sensor using a Torx screwdriver.
• Clean the MAF sensor with MAF cleaner spray if it is dirty; otherwise, replace it with a new one.

C. Check and Replace Fuel Pump (if necessary)

• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition on to check the fuel pressure; it should be within the range specified by the manufacturer (usually 50-60 psi).
• If the pressure is low, replace the fuel pump located in the fuel tank.

D. Inspect and Replace Oxygen Sensors

• Locate the oxygen sensors on the exhaust system.
• Use an oxygen sensor socket to remove the sensor.
• Install a new sensor and ensure it is properly connected.

3. Reassemble and Reconnect

• Reattach any components removed during the inspection and repair process.
• Reconnect the negative terminal of the battery.