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 thinks the air pressure in the engine is too low compared to how much the gas pedal is pressed.
The P112E code is triggered when the manifold absolute pressure (MAP) sensor reading is lower than expected for the given throttle angle.
The P112E code indicates a discrepancy between the manifold absolute pressure and the throttle angle. The engine control module (ECM) uses the MAP sensor to monitor the engine's air intake pressure and compares it to the throttle position sensor (TPS) readings. If the MAP reading is too low for the given throttle position, the ECM sets the P112E code.
• Check Engine Light is on
• Poor engine performance
• Rough idling
• Faulty MAP sensor
• Vacuum leak in the intake manifold
• Faulty throttle position sensor
MAP Sensor: Manifold Absolute Pressure Sensor, measures air pressure in the intake manifold.
Throttle Angle: The position of the throttle valve, which controls air flow into the engine.
• Use an OBD-II scanner to confirm the code.
• Inspect the MAP sensor and its wiring for damage.
• Check for vacuum leaks in the intake system.
• Replace the MAP sensor if faulty.
• Repair any vacuum leaks in the intake manifold.
• Replace the throttle position sensor if necessary.
• OBD-II scanner
• Multimeter
• Vacuum gauge
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain the intake system.
• Ensure sensors are clean and functioning properly.
• Check for vacuum leaks periodically.
Engine Performance
• Have the vehicle inspected by a professional.
• Do not ignore the Check Engine Light.
• Avoid driving the vehicle aggressively until repaired.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been reported in vehicles with high mileage or poor maintenance history.
Moderate – Address the issue to prevent further engine performance problems.
Driving with a Check Engine Light on can lead to further damage and may not meet emissions standards.
• Engine running at idle
• Varying throttle positions
The MAP sensor is typically located on the intake manifold.
Q: Can I drive with a P112E code?
A: It's not recommended as it may lead to poor engine performance and increased emissions.
Q: How do I know if my MAP sensor is bad?
A: Symptoms include rough idling, poor fuel economy, and the Check Engine Light being on.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.