P2261 — Turbocharger/Supercharger Bypass Valve A - Mechanical

What Does P2261 Mean?

P2261 is a diagnostic trouble code indicating: Turbocharger/Supercharger Bypass Valve A - Mechanical. This code relates to the powertrain system. It has been reported in NHTSA complaints across 2 different vehicle models.

Symptoms of P2261

⚠️ Check engine light illuminated
⚠️ Knocking or pinging noise

Common Causes

🔍 Sensor or control module malfunction

P2261 Reports by Year

2021

1

2024

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"My check engine light came on before the car reached 700 miles on it. The car acts like it does not want to accelerate, but the RPMS go up- I have cruised at 60mph (and at 35) and tried to move over to a different lane to avoid upcoming vehicles and the car won’t accelerate. Merging onto the freeway"
— Hyundai Elantra owner, 09/28/2021

"HVAC system has failed twice, upon inspecting, connections are melted. This is a fire RISK. Fuses constantly blow. Check engine light constantly comes on and after having auto zone diagnose, issues include Power Train System (P2261), anti-lock brake system - Wheel Speed Sensor (all 4) show invalid"
— Hyundai Veloster owner, 01/22/2024

Source: NHTSA Complaints Database

Most Reported Vehicles for P2261

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	HYUNDAI ELANTRA
2	HYUNDAI VELOSTER

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2261: Turbocharger/Supercharger Bypass Valve A - Mechanical