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P2229 is a diagnostic trouble code (DTC) for "Barometric Pressure Circuit High". 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 is on diagnostic inspection. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Barometric pressure circuit high
This trouble code indicates that the powertrain control module has detected a pressure that exceeds the manufacturer’s threshold of acceptance in the barometric pressure circuit.
Some potential causes of this trouble code would include:
An engine that is running very poorly such as one that is misfiring or stumbling
Clogged catalytic converters
A faulty mass airflow, manifold absolute pressure, barometric pressure, or throttle position sensor may exist
A faulty powertrain control module
Damaged wiring or connectors that are associated with this system
Symptoms of this trouble code that the driver may experience would include:
A mechanic may begin diagnosing this trouble code by ensuring that the engine is running properly. If this trouble code is associated with any misfire codes, exhaust codes, or emissions codes, those issues should be resolved first. Next, the mechanic would locate the barometric pressure, mass airflow, manifold absolute pressure, and throttle position sensors and test them all according to the manufacturer’s procedure. During these tests, the mechanic would confirm the integrity of all the circuitry associated with this system. Finally, the powertrain control module would be tested. Depending on the results of these tests, the mechanic would then make a recommendation to the customer as to which part would make the most sense to replace.
A common mistake that could be made when diagnosing this trouble code would be to replace the mass airflow, manifold absolute pressure, barometric pressure, or throttle position sensor without properly testing them first. It is important to understand what each sensor’s purpose is and how they work. Once this information is known, the diagnosis of issues like this will become more natural.
This code is moderately serious as it can cause drivability issues but nothing major. This trouble code is still one that should be diagnosed and repaired as soon as possible but this code is not likely to cause major engine damage even if driven on for a short period of time.
Repairs that could potentially resolve this issue would include:
It is very important to consider all angles when diagnosing this trouble code because there are multiple things that could cause this trouble code to be stored. A thorough inspection of all parts involved will provide the best results.
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