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P0340 on JEEP WRANGLER

Severity
Medium
NHTSA Reports
2
Most Affected
2005, 2015

What P0340 Means on Your JEEP WRANGLER

Real JEEP WRANGLER Owner Reports (Source: NHTSA Complaints Database)

"Engine codes p0340 and p0344 chrysler campaign e05 replace opda and camshaft - my manufacture date is june 2005, there is 113k on the engine, when the weather is cold (40 f or below) the engine has long start issues, there is play in the opda enough to put the engine in limp mode not revving past 25"

— 2005 JEEP WRANGLER owner • ENGINE • Filed 09/17/2016

"Between the dates of 3/20 and 8/1 my 2015 jeep wrangler unlimited (4dr, 4x4) has been experiencing intermittent cel p0340 while pulling a grade. when the cel occur the vehicle loses significant power and is unable to maintain speed. the traction control system lights come on indicating an error."

— 2015 JEEP WRANGLER owner • STEERING,VEHICLE SPEED CONTROL,ENGINE • Filed 08/01/2015

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

Common Causes of P0340 on JEEP WRANGLER

50%
50%

Percentages based on NHTSA complaint component analysis for this vehicle.

Complaint Trend by Year

2005
1
2015
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.

P0340 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