P2229 GMC Code - Barometric Pressure Sensor Circuit High Voltage
Quick Answer
The P2229 GMC code indicates a problem with the Barometric Pressure Sensor Circuit, specifically that the voltage is too high. Common causes include Faulty Barometric Pressure Sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2229 GMC indicates Barometric Pressure Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Barometric Pressure Sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P2229 GMC Description
The P2229 GMC code indicates a problem with the Barometric Pressure Sensor Circuit, specifically that the voltage is too high. The Barometric Pressure Sensor is responsible for measuring the atmospheric pressure outside the vehicle, which is crucial for the engine's air-fuel ratio calculations. When the sensor detects a high voltage, it means that the pressure readings are not within the expected range, potentially leading to incorrect fuel mixture adjustments and affecting the engine's performance.
Common Causes of P2229 GMC
- Faulty Barometric Pressure Sensor
- Damaged wiring or connectors in the sensor circuit
- ECM malfunction
- Vacuum leaks in the intake system
- Atmospheric pressure changes due to weather conditions
Symptoms of P2229 GMC
- Decreased fuel efficiency
- Engine hesitation or surging
- Rough idling or stalling
- Reduced power output
- Increased emissions levels
How to Fix P2229 GMC
- Diagnose the issue by using a scan tool to read the code and perform a thorough inspection of the Barometric Pressure Sensor and related components.
- Test the Barometric Pressure Sensor using a multimeter to check for proper voltage output.
- Inspect the wiring and connectors in the sensor circuit for any signs of damage or corrosion, repairing or replacing as needed.
- Clear the fault code and reset the ECM to see if the issue persists after repairs.
- Test drive the vehicle to ensure that the symptoms associated with the P2229 code have been resolved.
Cost to Fix P2229 GMC
The typical repair costs for addressing a P2229 GMC code can range from $150 to $400, depending on the extent of the issue and the specific components that need to be replaced. This estimate includes parts and labor, with the cost of a new Barometric Pressure Sensor typically ranging from $50 to $150. Keep in mind that the actual repair costs can vary based on the location, vehicle make and model, and the rates charged by auto repair shops. It is recommended to obtain quotes from multiple shops to compare prices and ensure a fair deal.
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Information for Specific GMC Models
- P2229 2014 GMC Sierra — Barometric Pressure Sensor Circuit High Voltage
- P2229 2015 GMC Sierra — Barometric Pressure Sensor Circuit High Voltage
- P2229 2016 GMC Sierra — Barometric Pressure Sensor Circuit High Voltage
- P2229 2017 GMC Sierra — Barometric Pressure Sensor Circuit High Voltage
- P2229 2018 GMC Sierra — Barometric Pressure Sensor Circuit High Voltage
Frequently Asked Questions about P2229 GMC Code
1. What are the common symptoms of OBDII code P2229 in a GMC vehicle?
- Common symptoms include rough engine idling, decreased fuel efficiency, and potential stalling or hesitation during acceleration.
2. What can cause the Barometric Pressure Sensor Circuit High Voltage error code P2229 in a GMC?
- Possible causes include a faulty barometric pressure sensor, damaged wiring or connectors in the sensor circuit, or a problem with the engine control module (ECM).
3. How can I diagnose the P2229 code related to the barometric pressure sensor in my GMC?
- To diagnose the issue, you can use an OBDII scanner to read the trouble codes, perform a visual inspection of sensor wiring and connectors, and test the sensor's voltage and resistance.
4. Is it safe to continue driving with OBDII code P2229 triggered in a GMC vehicle?
- It is not recommended to drive with this code active, as it can lead to potential engine performance issues and further damage if left unresolved.
5. Can I reset the P2229 code on my GMC by disconnecting the battery?
- While disconnecting the battery may temporarily clear the code, it is not a permanent solution. The underlying issue causing the code needs to be addressed for a lasting repair.
6. How much does it typically cost to repair the Barometric Pressure Sensor Circuit High Voltage error code P2229 in a GMC?
- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the barometric pressure sensor, repairing wiring, or reprogramming the ECM. Costs can range from $100 to $400 or more.
7. Are there any DIY tips for fixing the P2229 code in a GMC, or should I seek professional help?
- While simple tasks like checking sensor connections can be done by DIY enthusiasts, diagnosing and repairing the root cause of the code may require professional expertise to ensure a proper fix.
8. Can a dirty air filter cause the P2229 code to trigger in a GMC due to incorrect barometric pressure readings?
- A dirty air filter is unlikely to directly trigger the P2229 code, but it can affect engine performance and efficiency, leading to related issues that may contribute to the code being set.
9. How long does it typically take to repair the P2229 code related to the barometric pressure sensor in a GMC?
- The repair time can vary based on the specific cause of the code and the complexity of the fix. In general, it may take anywhere from 1 to 3 hours for a professional mechanic to diagnose and repair the issue.
10. Will resetting the P2229 code make it pass an emissions test for my GMC?
- Resetting the code without fixing the underlying issue will not solve the problem. The issue must be resolved and the system needs to pass a series of readiness tests before it can pass an emissions test.
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