Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer thinks the air pressure inside the engine is too high. It's like when you blow too much air into a balloon and it might pop.
The P1250 code indicates that the Manifold Absolute Pressure (MAP) sensor is detecting a pressure that is higher than expected.
The MAP sensor is responsible for measuring the air pressure inside the intake manifold. The engine control module (ECM) uses this information to adjust the air-fuel mixture for optimal performance. A P1250 code is triggered when the MAP sensor reports a pressure reading that is significantly higher than the expected range, indicating a potential issue with the sensor or related components.
• Check Engine Light is on
• Poor engine performance
• Decreased fuel efficiency
• Faulty MAP sensor
• Vacuum leaks
• Blocked or damaged intake manifold
MAP Sensor: Manifold Absolute Pressure Sensor, a device that measures the pressure inside the intake manifold.
ECM: Engine Control Module, the computer that manages engine performance.
• Use an OBD-II scanner to confirm the P1250 code.
• Inspect the MAP sensor and its wiring for damage.
• Check for vacuum leaks in the intake manifold.
• Replace the faulty MAP sensor.
• Repair any vacuum leaks found.
• Clean or replace the intake manifold if blocked.
• OBD-II scanner
• Multimeter
• Vacuum gauge
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and maintain the intake system.
• Replace air filters as recommended.
• Ensure proper engine maintenance.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
The P1250 code has been associated with vehicles experiencing intake system issues, often due to sensor failures or vacuum leaks.
Moderate – While the vehicle may still be drivable, ignoring this issue can lead to poor performance and increased fuel consumption.
Driving with a Check Engine Light on may cause the vehicle to fail emissions tests.
• Engine running
• Vehicle at operating temperature
The MAP sensor is typically located on or near the intake manifold.
Q: Can I drive with a P1250 code?
A: While you can drive with a P1250 code, it's not recommended as it can lead to further engine issues and decreased fuel efficiency.
Q: How do I reset the P1250 code?
A: After addressing the issue, you can reset the code using an OBD-II scanner.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
View on Amazon
Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
View on Amazon
Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.