P2227 OBD-II Trouble Code: Barometric Pressure Circuit Range/Performance

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2227 code

P2227 is a diagnostic trouble code (DTC) for "Barometric Pressure Circuit Range/Performance". 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 $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 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 $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P2227 DIAGNOSTIC Get a fair and transparent estimate upfront

P2227 trouble code definition

Either the barometric pressure sensor is providing a reading that does not correspond to the parameters of the ECM about the atmospheric conditions, or the output of related sensors such as the throttle position sensor or manifold absolute pressure sensor do not correlate.

What the P2227 code means

The barometric (BARO) sensor is used by the engine control module (ECM) to measure the pressure of the atmosphere. The pressure is affected by weather conditions, air volume, and altitude. A diaphragm is built into the BARO sensor which opens and closes at different atmospheric conditions. The sensor will translate this activity into an electrical resistance.

The ECM will send the BARO sensor a 5 volt reference. The voltage will be met by the resistance created by the BARO sensor. The BARO sensor will ingest the voltage into its own stomach known as resistance. Voltage being sent back to the ECM will vary depending on the amount of resistance inside the BARO sensor. If the voltage sent back to the ECM is too high or too low, a P2227 code will be set.

After the resistance is applied, the remaining voltage will be sent back to the ECM, which will tell the ECM the atmospheric pressure.

An accurate atmospheric pressure reading is needed to by the ECM to maintain delicate tasks such as fuel delivery.

What causes the P2227 code?

  • Faulty MAF (mass air flow) sensor
  • Faulty BARO sensor
  • Faulty ECM
  • Short or open condition in the BARO sensor circuit
  • Sticking idle air control valve
  • Clogged intake inlet- debris in airbox
  • Faulty throttle position sensor (TPS)

What are the symptoms of the P2227 code?

  • Check Engine Light illumination

  • Vehicle may go into limp mode. Limp mode is a fail safe mode for the engine where the ECM will only allow the vehicle to reach a limited speed (usually less than 30 miles per hour)

  • Sluggish acceleration

  • Rough idle

  • Engine hesitation

How does a mechanic diagnose the P2227 code?

  • It is best to diagnose such codes with a scan tool and observe the live data. The data from the MAF, BARO and TPS should increase at generally the same rate when opening the throttle

  • Measuring the voltage coming from the BARO, MAF, and TPS sensor with a multimeter

  • Inspecting the air box and air intake for debris

Common mistakes when diagnosing the P2227 code

Replacing the BARO sensor without the inspection of other sensors such as the MAF and TPS

How serious is the P2227 code?

It is fairly serious because the ECM will not be able to properly regulate the air-fuel ratio of the engine. An improper air-fuel ratio will shorten the lifespan of the engine as well as produce mass toxins which cause harm to the environment.

What repairs can fix the P2227 code?

Additional comments for consideration regarding the P2227 code

Some models such as Honda or Acura built the BARO sensor inside of the ECM. These models are also the most common which the BARO sensor fails. If the BARO sensor is determined to be bad, the entire ECM must be replaced.

Need help with a P2227 code?

YourMechanic offers certified mobile 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.

Check Engine Light
trouble codes
P2227

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2227 code.

SCHEDULE P2227 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

P0732 OBD-II Trouble Code: Gear 2 Incorrect Ratio
P0732 code identifies an issue with the vehicles automatic transmission often due too low transmission fluid or broken/faulty PCM.
P0764 OBD-II Trouble Code: Shift Solenoid C Intermittent
P0764 means a faulty shift solenoid and irregular voltage readings; caused by a failed shift solenoid, internal ATF blockages
P0593 OBD-II Trouble Code: Cruise Control Multi-Function Input “B” Circuit High
P0593 means an error with the cruise control multi-function input B circuit, often caused by a interior spill that damages the cruise control switch.

Related questions

codes p0174, p0302, and p2A03 read on code reader.
Hi there. What is happening is the codes are reading for a misfire on cylinder number 2 and the system is too lean on bank 2. Check the spark plugs and the fuel injector on cylinder 2 to see if...
My service engine soon light is on. I hear like a rattling noise when engine is running sometimes. The power doesn't feel the same
If you are referring to the check engine light (https://www.yourmechanic.com/article/what-does-the-check-engine-warning-light-mean-by-spencer-cates) on your vehicle occasionally the cause of it illuminating is the gas cap is loose. If the rubber seal on the gas cap is intact and the cap is tight,...
PO341 code - cruise control kicks off, engine light and vsa lights go on.
There could be an issue with the cruise control switch and the brake switch. The VSA light refers to the brake system and the light maybe coming on for the brake switch not functioning properly causing the cruise control switch...

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 (855) 347-2779 · hi@yourmechanic.com