Most common cause for code P0402

[neat1954]

Getting this code at 38,000 miles. 2022 ranger.

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[Stevedbvik1]

Getting this code at 38,000 miles. 2022 ranger.

Most likely the DPFE sensor
Type P0402 in the search bar. Hours of reading available for you

 

[My12SecRanger]

I am with Steve on this one replace the DPFE sensor first

 

[MattMc7]

Had this code a few weeks ago for the first time on my 22 Tremor with 35K. Swapped the sensor and assembly and all is well. There are some good detailed threads on it as well as a step by step with pictures. Took me about 30 minutes.

EGR DPFE Sensor Assembly Replacement Write-Up (LB5Z-9J433-B) | 2019+ Ford Ranger and Raptor Forum (5th Generation) - Ranger5G.com

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