Engine-CodesMercury – P2229 Mercury

P2229 Mercury Code - Barometric Pressure Sensor 'A' Circuit High

Quick Answer

The P2229 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Barometric Pressure Sensor 'A' Circuit being too high. Common causes include Faulty barometric pressure sensor, Wiring issues 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 Mercury indicates Barometric Pressure Sensor 'A' Circuit High.
Common causes
Common causes include Faulty barometric pressure sensor, Wiring issues 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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2229 Mercury Description

The P2229 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Barometric Pressure Sensor 'A' Circuit being too high. The barometric pressure sensor is a crucial component of the engine control system, responsible for measuring the atmospheric pressure and providing this data to the engine control module (ECM). This information is vital for the ECM to adjust fuel delivery, ignition timing, and other engine parameters to ensure optimal performance and emissions.

OBDII Code P2229 Mercury - Barometric Pressure Sensor 'A' Circuit High
P2229 Mercury Code - Barometric Pressure Sensor 'A' Circuit High

Common Causes of P2229 Mercury

  1. Faulty barometric pressure sensor
  2. Wiring issues in the sensor circuit
  3. ECM malfunction
  4. Vacuum leaks in the intake system
  5. Atmospheric pressure changes due to altitude or weather conditions

Symptoms of P2229 Mercury

  1. Poor fuel economy
  2. Rough idling
  3. Stalling
  4. Hesitation during acceleration
  5. Check Engine Light illuminated

How to Fix P2229 Mercury

  1. Diagnose the issue by using a scan tool to read the code and check the barometric pressure sensor's voltage readings.
  2. Inspect the wiring harness and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the barometric pressure sensor for proper operation. Replace if faulty.
  4. Clear the DTC and reset the ECM to see if the code returns. Test drive the vehicle to confirm the repair.
  5. If the code persists, further diagnosis may be required to check for ECM issues or other underlying problems.

Cost to Fix P2229 Mercury

The cost of repairing a P2229 code on a Mercury vehicle can vary depending on the specific model and year of the vehicle, as well as the location and labor rates of the auto repair shop. Typically, the cost of replacing a barometric pressure sensor can range from $100 to $300, including parts and labor. Additional costs may apply if other components need to be replaced or if further diagnosis is needed. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for the repair.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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