AutoCodes – Mercury – P2227 Mercury

P2227 Mercury Code - Barometric Pressure Sensor 'A' Circuit Range/Performance

Quick Answer

The Powertrain Control Module (PCM) continuously monitors this sensor for concerns. Common causes include Faulty Barometric Pressure (BARO) sensor, Barometric Pressure (BARO) sensor harness is open or shorted, Barometric Pressure (BARO) sensor circuit poor electrical connection. 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
P2227 Mercury indicates Barometric Pressure Sensor 'A' Circuit Range/Performance.
Common causes
Common causes include Faulty Barometric Pressure (BARO) sensor, Barometric Pressure (BARO) sensor harness is open or shorted, Barometric Pressure (BARO) sensor circuit poor electrical connection.
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 Popularity 1,482
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2227 Mercury Description

The Powertrain Control Module (PCM) continuously monitors this sensor for concerns. The test fails when the Barometric Pressure (BARO) Parameter Identification (PID) does not correlate with the Throttle Intake Pressure (TIP) or the Manifold Absolute Pressure (MAP) PIDs at ignition ON. This DTC sets when the PCM detects an out of range condition in the control circuit.
OBDII Code P2227 Mercury - Barometric Pressure Sensor 'A' Circuit Range/Performance - AutoCodes.com
P2227 Mercury Code - Barometric Pressure Sensor 'A' Circuit Range/Performance

What are the Possible Causes of the DTC P2227 Mercury?

  • Faulty Barometric Pressure (BARO) sensor
  • Barometric Pressure (BARO) sensor harness is open or shorted
  • Barometric Pressure (BARO) sensor circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2227 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2227 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.

Frequently Asked Questions about P2227 Mercury Code

What does the OBDII code P2227 mean for a Mercury vehicle?

P2227 indicates a problem with the Barometric Pressure Sensor 'A' circuit range or performance, meaning the sensor is providing readings outside the expected range.

What are the common symptoms of code P2227 on a Mercury?

Symptoms may include poor engine performance, rough idling, reduced fuel efficiency, difficulty starting, and an illuminated check engine light.

What causes the P2227 code to appear?

Common causes include a faulty barometric pressure sensor, damaged or corroded sensor wiring, a malfunctioning PCM (Powertrain Control Module), or vacuum leaks.

Can a dirty air filter trigger the P2227 code?

While it's unlikely, a dirty air filter could restrict airflow and potentially cause sensor issues. It's best to inspect all possible causes.

How do you diagnose the P2227 code on a Mercury?

Diagnosis involves checking the barometric pressure sensor and its wiring, inspecting for vacuum leaks, and using a scan tool to compare sensor readings to atmospheric pressure.

Is it safe to drive a Mercury with the P2227 code?

Driving with this code isn't recommended, as it can lead to poor performance, stalling, or further damage to the engine or emissions system.

How do you fix the P2227 code on a Mercury?

Repairs may include replacing the barometric pressure sensor, repairing or replacing damaged wiring, fixing vacuum leaks, or reprogramming/updating the PCM if necessary.

Can a bad MAP sensor cause a P2227 code?

Yes, on some Mercury vehicles, the MAP (Manifold Absolute Pressure) sensor and barometric pressure sensor may be integrated, so a faulty MAP sensor could trigger this code.

How much does it cost to fix a P2227 code on a Mercury?

Repair costs vary, but replacing a barometric pressure sensor can range from $100 to $300, depending on parts and labor. Additional repairs may increase costs.

Can a low battery cause the P2227 code?

A low battery is unlikely to directly cause this code, but voltage issues can sometimes affect sensor performance, so it's worth checking the battery and charging system.

Discuss the causes and fixes for P2227 Mercury OBDII Code

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