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Engine-Codes – Generic – P1592

P1592 Code - Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio

Quick Answer

The P1592 diagnostic trouble code (DTC) indicates that there is an implausible ratio between the Barometric Pressure Sensor (BARO) and the Manifold Absolute Pressure Sensor (MAP) in the vehicle's engine control module (ECM). Common causes include Faulty BARO or MAP sensor, Vacuum leak in the intake system, Clogged air filter. 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
P1592 indicates Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio.
Common causes
Common causes include Faulty BARO or MAP sensor, Vacuum leak in the intake system, Clogged air filter.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1592 Description

The P1592 diagnostic trouble code (DTC) indicates that there is an implausible ratio between the Barometric Pressure Sensor (BARO) and the Manifold Absolute Pressure Sensor (MAP) in the vehicle's engine control module (ECM). The BARO sensor measures the atmospheric pressure outside of the engine, while the MAP sensor measures the pressure inside the intake manifold. The ECM uses data from both sensors to calculate the air density and determine the appropriate air/fuel mixture for optimal engine performance.

OBDII Code P1592 - Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio
P1592 Code - Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio

Common Causes of P1592

  1. Faulty BARO or MAP sensor
  2. Vacuum leak in the intake system
  3. Clogged air filter
  4. Malfunctioning ECM
  5. Wiring/connectivity issues between sensors and ECM

Symptoms of P1592

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or lack of power during acceleration
  4. Check Engine Light illuminated
  5. Increased emissions

How to Fix P1592

  1. Begin by using a diagnostic scan tool to confirm the presence of the P1592 code and identify the specific sensor causing the issue.
  2. Inspect and test the BARO and MAP sensors for proper operation, replacing any faulty sensors as necessary.
  3. Check for any vacuum leaks in the intake system and repair or replace any damaged components.
  4. Inspect the air filter and replace if dirty or clogged.
  5. Clear the fault code from the ECM and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1592

The typical repair costs for addressing a P1592 code can vary depending on the specific cause of the issue. On average, replacing a faulty BARO or MAP sensor can cost between $50 and $200 each, not including labor. If additional repairs such as fixing a vacuum leak or replacing the air filter are needed, the total cost could range from $150 to $500. It's important to note that labor rates at auto repair shops can vary, typically ranging between $80 and $150 per hour. Therefore, it's advisable to check with local shops for a more accurate estimate based on your vehicle's make and model.

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Code P1592 Information for Specific Makes

  • P1592 Audi — Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio
  • P1592 Land Rover — Antilock Brake System Rough Road Signal Short Circuit To Positive
  • P1592 Subaru — Neutral Position Switch Circuit - MT Model
  • P1592 Volkswagen — Barometric Pressure Sensor/Manifold Absolute Pressure Sensor Implausible Ratio
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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