Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer thinks there's not enough air pressure in the engine, which might mean the engine isn't getting enough air to work properly.
The Manifold Absolute Pressure (MAP) sensor measures the pressure inside the intake manifold. If the pressure is too low, it can affect the engine's performance.
The P1255 code indicates that the MAP sensor has detected a pressure level that is lower than the predetermined threshold set by the manufacturer. This could affect the air-fuel mixture and lead to poor engine performance.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty MAP sensor
• Vacuum leak in the intake manifold
• Blocked or restricted intake air system
MAP Sensor: A sensor that measures the pressure inside the intake manifold.
Intake Manifold: A part of the engine that distributes air to the cylinders.
• Check for any vacuum leaks in the intake manifold.
• Test the MAP sensor for proper operation.
• Inspect the intake air system for blockages.
• Replace the MAP sensor if faulty.
• Repair any vacuum leaks found.
• Clear any blockages in the intake air system.
• OBD-II scanner
• Vacuum gauge
• Multimeter
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and replace air filters.
• Check for vacuum leaks during routine maintenance.
• Ensure the MAP sensor is clean and functioning.
Sensor Issue
• Have your vehicle inspected by a professional if the Check Engine Light comes on.
• Do not ignore the warning signs as they can lead to more serious engine problems.
Check your vehicle's warranty to see if the MAP sensor is covered.
The P1255 code has been commonly reported in vehicles with high mileage or those that have not been regularly maintained.
Moderate – While the vehicle may still be drivable, it is important to address this issue to avoid further engine performance problems.
Operating a vehicle with a known issue can lead to increased emissions and potential safety risks.
• Engine at operating temperature
• Vehicle idling
The MAP sensor is typically located on the intake manifold, near the throttle body.
Q: Can I drive with a P1255 code?
A: While you may be able to drive, it's best to have it checked to avoid further damage.
Q: How do I clear a P1255 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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