Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer found a problem when it tried to compare the air pressure in the engine to the pressure in the exhaust. Imagine if you were trying to blow up a balloon, but the air wasn't going in correctly because something was wrong with the pump.
The P006B code is triggered when the Powertrain Control Module (PCM) detects a discrepancy between the Manifold Absolute Pressure (MAP) sensor and the exhaust pressure sensor readings.
The MAP sensor measures the pressure inside the intake manifold, while the exhaust pressure sensor measures the pressure in the exhaust system. These readings are used by the PCM to optimize engine performance and emissions. A correlation error indicates a mismatch between these sensor readings, suggesting a potential fault in one of the sensors, their circuits, or related components.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Rough idling
• Engine stalling
• Faulty MAP sensor
• Faulty exhaust pressure sensor
• Wiring or connector issues
• Vacuum leaks
• Exhaust system blockages
MAP Sensor: A device that measures the pressure inside the intake manifold.
PCM: Powertrain Control Module, the computer that manages engine performance.
• Use an OBD-II scanner to confirm the P006B code.
• Inspect the MAP and exhaust pressure sensors for damage.
• Check wiring and connectors for corrosion or damage.
• Perform a vacuum leak test.
• Inspect the exhaust system for blockages.
• Replace the faulty MAP sensor.
• Replace the faulty exhaust pressure sensor.
• Repair or replace damaged wiring or connectors.
• Fix any vacuum leaks.
• Clear any blockages in the exhaust system.
• OBD-II scanner
• Multimeter
• Vacuum pump
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance checks
• Timely replacement of sensors
• Ensure exhaust system is clear of blockages
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly check and maintain sensors.
Sensor-related repairs may be covered under the vehicle's emissions warranty.
The P006B code has been more prevalent in vehicles with advanced emissions control systems, as they rely heavily on accurate sensor data.
Moderate – While the vehicle may still be drivable, it can lead to poor performance and increased emissions.
Driving with a faulty sensor may lead to increased emissions, which could violate local emissions laws.
• Engine at operating temperature
• Vehicle in a stationary position
The MAP sensor is typically located on the intake manifold, while the exhaust pressure sensor is found in the exhaust system near the turbocharger (if equipped).
Q: Can I drive with a P006B code?
A: It's possible to drive with this code, but it may affect engine performance and fuel efficiency. It's best to address the issue promptly.
Q: How do I clear a P006B code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is resolved, the code should not return.
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