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 computer in your car thinks that the air pressure in part of the engine is too low compared to how much the gas pedal is pressed. It's like when you expect to get a lot of air when you blow into a balloon, but not much air is coming out.
The P11B0 code is triggered when the Engine Control Module (ECM) detects a discrepancy between the manifold absolute pressure and the throttle angle, indicating that the pressure is lower than expected for the given throttle position on Bank 2.
The ECM monitors the manifold absolute pressure (MAP) sensor and compares it to the throttle position sensor (TPS) readings. If the MAP sensor reading is consistently lower than expected when compared to the throttle angle, the ECM will set the P11B0 code. This can indicate a problem with the MAP sensor, TPS, or related components.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Faulty MAP sensor
• Vacuum leak in the intake manifold
• Faulty throttle position sensor (TPS)
MAP Sensor: Measures the air pressure inside the intake manifold.
Throttle Position Sensor (TPS): Measures the position of the throttle valve.
• Use an OBD-II scanner to confirm the code.
• Inspect the MAP sensor and wiring for damage.
• Check for vacuum leaks in the intake manifold.
• Replace the faulty MAP sensor.
• Repair any vacuum leaks in the intake manifold.
• Replace the throttle position sensor if necessary.
• OBD-II scanner
• Multimeter
• Vacuum gauge
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and clean the MAP sensor.
• Check for and repair any vacuum leaks promptly.
• Ensure the throttle body is clean and functioning properly.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you're unsure.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been known to appear in vehicles with aging sensors or those that have not had regular maintenance.
Moderate – While the vehicle may still be drivable, it is important to address the issue to prevent further engine performance problems.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with local emissions regulations.
• Engine at operating temperature
• Idle and varying throttle positions
The MAP sensor is typically located on or near the intake manifold, while the throttle position sensor is located on the throttle body.
Q: Can I drive my car with the P11B0 code?
A: While you can drive the car, it's best to get it checked soon to avoid further issues.
Q: Will the P11B0 code clear itself?
A: The code may clear itself if the underlying issue is resolved, but it's best to use a scanner to confirm.
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