P0049: Turbocharger/Supercharger A Turbine Overspeed
What Does P0049 Mean?
P0049 is a diagnostic trouble code indicating: Turbocharger/Supercharger A Turbine Overspeed. This code relates to the fuel and air metering system. It has been reported in NHTSA complaints across 1 different vehicle models.
Symptoms of P0049
- ⚠️ Check engine light illuminated
Common Causes
- 🔍 Worn timing chain or belt
- 🔍 EVAP system component failure
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"OBD CODE P0049 - EVAP CANISTER PURGE VALVE: REPLACED TWICE ALREADY. NEEDS TO BE REPLACED AGAIN AT 113,000 MILES. ODB CODE P008: TIMING CHAIN ISSUE. REPLACE AT 48,000 MILES. NEEDS REPLACEMENT AGAIN AT 113,000 MILES. NO SIGNS OF MALFUNCTION OTHER THAN CHECK ENGINE LIGHT ON. FAILS TO PASS MASSACHUSE"
— Chevrolet Camaro owner, 10/20/2016
Source: NHTSA Complaints Database
Most Reported Vehicles for P0049
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHEVROLET CAMARO |
Frequently Asked Questions
Can I drive with this code?
Will this code cause my car to fail emissions?
How much does it typically cost to fix?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Check and tighten the gas cap — replace if cracked or damaged ($5-15)
- 🔧 Clean or replace the mass air flow (MAF) sensor; check for vacuum leaks
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.