P2261 OBD-II Trouble Code: Turbo/Super Charger Bypass Valve - Mechanical

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2261 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2261 code

P2261 is a diagnostic trouble code (DTC) for "Turbo/Super Charger Bypass Valve - Mechanical". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P2261 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P2261 code definition

Turbo/Super Charger Bypass Valve - Mechanical

What the P2261 code means

The P2261 diagnostic trouble code is an indication that the turbo/super charger bypass valve mechanical control circuit is giving the Powertrain Control Module (PCM) a reading that is abnormal.

The purpose of the turbocharger is to force air into the engine in order to increase horsepower. This is accomplished when the turbocharger moves impellers that are located in two separate housing chambers.

The impeller in the first chamber turns as engine exhaust pressure is forced through it. The impeller in the first chamber then turns the impeller in the second chamber. The second chamber impeller picks up cooler air from intercoolers and the turbocharger intake system and forces dense air into the engine.

Fuel that is dense boosts increased horsepower, and the rise of revolutions per minute (RPM). Boost pressure is achieved with high RPMs, and the engine cannot operate properly if boost pressure is excessively high or low (boost pressure specifications are determined by the manufacturer and programmed into the PCM).

When the boost pressure is higher or lower than the predetermined specifications, the PCM will store the P2261 trouble code, and the Check Engine Light will come on.

What causes the P2261 code?

  • Intake manifold vacuum leak
  • Dirty air cleaner
  • Wastegate that is stuck open
  • Wastegate that is stuck closed
  • Faulty intercooler
  • Bolts between the turbocharger and exhaust manifold that are loose
  • Faulty boost sensor
  • Boost sensor wiring that is shorted or open
  • Boost sensor reference circuit connectors that are loose, disconnected, or corroded
  • Turbo failure caused by internal oil leaks and/or oil supply restrictions

What are the symptoms of the P2261 code?

  • Difficulty with acceleration
  • Rattling sound coming from the turbocharger and/or turbo pipes
  • Smoke coming from the exhaust
  • High engine temperatures
  • High transmission temperatures
  • Hissing sound coming from the turbocharger wastegate and/or turbocharger hoses
  • Loss of engine performance
  • Unusual boost pressure levels
  • Fouled spark plug
  • Cylinder combustion
  • Other diagnostic trouble codes stored along with P2261, such as boost codes, engine misfire codes, or knock sensor codes

How does a mechanic diagnose the P2261 code?

  • Inspects wiring and connectors for shorts, burns, and corrosion

  • Clears the codes and runs the engine (if the P2261 code does not come back, it is an indication that an intermittent problem exists, which cannot always be diagnosed immediately)

  • Makes sure there are no misfire conditions

  • Makes sure that the turbo hose clamps are tight

  • Makes sure that the turbo intake hoses and intercooler hoses are free from leaks and cracks

  • Makes sure that the air intake hoses are tight and not damaged in any way.

  • Makes sure that the vacuum lines are not cracked, torn, or disconnected.

  • While running the engine, gets the RPMs up to 5,000 and releases the throttle (uses a boost gauge to observe boost pressure levels)

If boost pressure levels are above 19 lbs., this is an indication that the westgate is faulty.

If boost pressure levels fall below 14 lbs., this is an indication that there is a problem with the turbocharger or exhaust.

  • Uses a vacuum pump to see if the wastegate is functioning properly

If an extreme drop in boost pressure is observed, this is an indication that the wastegate is not closing completely.

If low boost pressure is observed, this is an indication that the wastegate is not opening completely.

  • Inspects the inside of the turbo outlet hose for standing oil

  • Inspects the impeller for damage and whether the impeller is making contact with the inner housing and checks to make sure that there are no loose bearings (if any of these conditions exist, it is an indication that the turbocharger is defective)

  • Checks the voltage and resistance of the turbocharger boost sensor electrical circuitry and connectors (if the voltage and resistance readings do not coincide with the specifications that have been predetermined by the manufacturer, the circuitry will need to be replaced or repaired, as necessary)

Common mistakes when diagnosing the P2261 code

  • One common mistake when diagnosing the P2261 trouble code is not inspecting the turbocharger oil system to determine whether it is necessary to clear debris and/or obstructions.

  • Another mistake that is commonly made is replacing the turbocharger before making sure the wastegate and circuitry is operating properly.

How serious is the P2261 code?

The symptoms of the P2261 diagnostic trouble code will affect the overall engine performance of the vehicle. Some of these symptoms include:

  • a lack of power
  • poor acceleration
  • spark plugs fouling out

These symptoms will make the vehicle difficult to operate. For this reason, the P2261 trouble code is considered a serious one and should be diagnosed and repaired as soon as possible.

What repairs can fix the P2261 code?

  • Replacing damaged vacuum line
  • Replacing intake manifold gasket
  • Replacing air filter
  • Replacing wastegate
  • Replacing intercooler
  • Replacing or tightening bolts between the turbocharger and exhaust manifold
  • Replacing boost sensor
  • Repairing or replacing boost sensor wiring
  • Repairing or replacing boost sensor reference circuit connectors
  • Replacing turbo or oil lines leading to the turbo that are restricted

Additional comments for consideration regarding the P2261 code

There are a lot of components in the turbo system that help control turbo boost. It is important to check all of the turbo system components while diagnosing this trouble code. It is also important to mindful that loose or broken vacuum hoses have the potential to cause the P2261 diagnostic trouble code to be stored by the Powertrain Control Module (PCM).

*Need help with a P2261 code? *

YourMechanic offers certified mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P2261
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2261 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,484

Rating Summary
3,176
153
40
23
92
3,176
153
40
23
92

Richard

10 years of experience
415 reviews
Richard
10 years of experience
This is the second time I’ve had Richard work on my car. He always does an outstanding job and is quick, knowledgeable and professional. Highly recommended!!
2012 DODGE CHALLENGER - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Michael

13 years of experience
372 reviews
Michael
13 years of experience
Mike was an absolute professional when he arrived. He walked me thru the whole process of my repairs and also made good recommendations for preventive issues. His mechanical knowledge and good customer services was a breath of air and greatly appreciated :-)
2007 CHEVROLET AVALANCHE - CHECK ENGINE LIGHT IS ON INSPECTION - MARIETTA, GEORGIA

Rodrigo

10 years of experience
85 reviews
Rodrigo
10 years of experience
Rodrigo was exactly on time, very professional and friendly. He assessed my car, let me know the exact problem when a previous mechanic from a shop in my area was unable to. I felt he was very honest and sincere letting me know the level of urgency that I deal with the issue. Absolutely no pressure. I will absolutely use Rodrigo the next time I need anything to do with my car and will tell everyone about him. This is such a great service, I will never go to another mechanic again. It is so convenient. I couldn’t be happier. :)
2013 SMART FORTWO - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Ricardo

8 years of experience
223 reviews
Ricardo
8 years of experience
Great service and was very helpful on what maintenance my vehicle needed and what to expect in the future. Would definitely recommend to anyone and will.
2004 MITSUBISHI LANCER - CHECK ENGINE LIGHT IS ON - LOS ANGELES, CALIFORNIA

More related articles

P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem
P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance...

Related questions

Q: Turbo wastegate stuck closed. Need solution.

Hello. P2261 is the code for an issue with the vehicle's turbocharger bypass valve, also known as the wastegate. If the computer detects an issue with the wastegate circuit or signal it will activate the Check Engine Light in order...

Q: B2208

This is a known recall issue and should be taken to your nearest Dodge dealer to have diagnosed as some of these have been replaced with no issue and some have been linked to further problems with electrical problems. The...

Q: CEL for PO303 PO404

Do you mean P0303 and P0304 or an actual P0404? The 404 is for an exhaust gas re circulation valve problem where the valve may be clogged or the vacuum supply hose my be cracked. The coil may look ok,...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com