P2229 Fault Code

Barometric Pressure Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2229 fault code indicates that the barometric pressure circuit has detected a high voltage condition. This code typically appears when the powertrain control module (PCM) notices that the barometric pressure readings are above the expected range, which can affect engine performance and fuel efficiency.

What are the symptoms of the P2229 code?

• Check Engine Light (CEL) illuminated
• Poor engine performance or rough idling
• Decreased fuel efficiency
• Failure in emissions tests
• In some cases, no noticeable symptoms may occur.

What causes the P2229 code?

• Faulty barometric pressure sensor
• Poor electrical connections or wiring issues
• Issues with the PCM or its software
• Contaminated or damaged sensor environment
• Malfunctioning intake manifold pressure sensor

How to fix P2229?

• Inspect and replace the barometric pressure sensor if faulty
• Check and repair any damaged wiring or connections
• Update or reflash the PCM if software issues are present
• Ensure that the sensor and its surrounding environment are clean and free from obstruction
• Clear the fault code and monitor to see if it returns after repairs.