P0730 on Dodge Challenger
Incorrect Gear Ratio
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Dodge Challenger context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0730.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0730 Means on Your Dodge Challenger
P0730 is a diagnostic trouble code indicating: Incorrect Gear Ratio. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Dodge Challenger Owner Reports
Source: NHTSA Complaints Database
"Issue # 1) i have an automatic transmission 2009 dodge challenger rt. so i was driving under normal conditions accelerating normally and the engine coughs...strange. then it does it again, a very sudden cough like it is struggling for air, the vehicle almost shudders too. engine code pops up."
"Tl* the contact owns a 2010 dodge challenger. while driving at 70 mph, the vehicle stalled while trying to accelerate and the transmission warning signal illuminated. when the vehicle was restarted, the warning signal light was not illuminated."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Dodge Challenger
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.