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P0021 on FORD EXPEDITION

Severity
Medium
NHTSA Reports
2
Most Affected
2006, 2019

What P0021 Means on Your FORD EXPEDITION

Real FORD EXPEDITION Owner Reports (Source: NHTSA Complaints Database)

"the service engine light continues to turn on. the timing belt continues to fail and has already been replaced once. the camshaft on both sides have been replaced. the solenoids have also been replaced and the diagnostics codes still pop up (p0022) (p0021) are just some that i can remember."

— 2006 FORD EXPEDITION owner • SUSPENSION,ENGINE,FUEL/PROPULSION SYSTEM • Filed 01/08/2024

"My family received a notice of Customer Satisfaction Program 21N08 – PCM Reprogram Due to Engine Shudder – 2017-2020 Ford F-150, 2018-2020 Expedition, & 2018-2020 Lincoln Navigator. We immediate began trying to locate an authorized repair facility. It took several months to get an appointment."

— 2019 FORD EXPEDITION owner • ENGINE • Filed 05/23/2022

Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.

Common Causes of P0021 on FORD EXPEDITION

50%
50%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2006
1
2019
1

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.

  2. 2
    Get a proper diagnosis

    A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50-$150) pinpoints the root cause before you spend money on parts.

  3. 3
    Compare repair quotes

    Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.

P0021 on Other Vehicles

Data sourced from the National Highway Traffic Safety Administration (U.S. Department of Transportation) and the SAE J2012 OBD-II standard. Code definitions follow the SAE J2012 / ISO 15031-6 standard. Owner reports are filed directly with NHTSA by vehicle owners. This information is provided for educational purposes only and should not replace professional automotive diagnosis. Always consult a qualified mechanic for vehicle repair decisions.

Last updated: March 2026