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P0240 on HYUNDAI TUCSON

Severity
Medium
NHTSA Reports
2
Most Affected
2017, 2019

What P0240 Means on Your HYUNDAI TUCSON

Real HYUNDAI TUCSON Owner Reports (Source: NHTSA Complaints Database)

"The contact owns a 2017 Hyundai Tucson. The contact stated that while his girlfriend was driving approximately 50 MPH, the engine started knocking, and the vehicle stalled. The contact stated that several unknown warning lights were illuminated."

— 2017 HYUNDAI TUCSON owner • ENGINE AND ENGINE COOLING,ENGINE • Filed 08/14/2024

"I have had to replace the exhaust manifold and catalytic converter twice since owning my car. I have owned my car since 2020 and bought it at 23,000 miles. The car now has 100,000 miles - all highway."

— 2019 HYUNDAI TUCSON owner • ENGINE • Filed 09/26/2024

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

Common Causes of P0240 on HYUNDAI TUCSON

50%
50%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2017
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.

P0240 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