P2073 Code - Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Idle
Quick Answer
The P2073 diagnostic trouble code indicates a correlation problem between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and the Throttle Position Sensor (TPS) when the vehicle is idling. Common causes include Faulty MAP sensor: A malfunctioning MAP sensor can send incorrect pressure readings to the ECM, Faulty MAF sensor: A malfunctioning MAF sensor can provide inaccurate airflow data to the ECM, Faulty TPS: A faulty Throttle Position Sensor can give incorrect throttle position readings to the ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2073 indicates Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Idle.
- Common causes
- Common causes include Faulty MAP sensor: A malfunctioning MAP sensor can send incorrect pressure readings to the ECM, Faulty MAF sensor: A malfunctioning MAF sensor can provide inaccurate airflow data to the ECM, Faulty TPS: A faulty Throttle Position Sensor can give incorrect throttle position readings to the ECM.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P2073 Description
The P2073 diagnostic trouble code indicates a correlation problem between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and the Throttle Position Sensor (TPS) when the vehicle is idling. This means that the Engine Control Module (ECM) is detecting a discrepancy in the readings from these sensors, which are crucial for the engine's performance. When these sensors are not in sync, it can lead to poor engine performance, reduced fuel efficiency, and potential drivability issues. The ECM uses data from these sensors to calculate the correct air-fuel mixture, ignition timing, and other parameters needed for optimal engine operation.
Common Causes of P2073
- Faulty MAP sensor: A malfunctioning MAP sensor can send incorrect pressure readings to the ECM.
- Faulty MAF sensor: A malfunctioning MAF sensor can provide inaccurate airflow data to the ECM.
- Faulty TPS: A faulty Throttle Position Sensor can give incorrect throttle position readings to the ECM.
- Wiring issues: Damaged or corroded wiring connecting the sensors to the ECM can cause communication errors.
- ECM malfunction: A malfunctioning ECM can misinterpret data from the sensors, leading to a correlation problem.
Symptoms of P2073
- Rough idle: The engine may run erratically or unevenly when idling.
- Reduced power: The vehicle may lack power or struggle to accelerate.
- Poor fuel economy: The vehicle may consume more fuel than usual.
- Stalling: The engine may stall or shut off unexpectedly.
- Check Engine Light: The Check Engine Light may illuminate on the dashboard.
How to Fix P2073
- Check sensor readings: Use a diagnostic scan tool to monitor the readings from the MAP sensor, MAF sensor, and TPS to identify any discrepancies.
- Check wiring and connections: Inspect the wiring harness and connectors for any damage, corrosion, or loose connections.
- Replace faulty sensors: If any of the sensors are found to be faulty, replace them with new, OEM-quality sensors.
- Reset ECM: Clear the diagnostic trouble codes and reset the ECM to allow it to relearn the sensor data.
- Test drive: After repairs are completed, test drive the vehicle to ensure that the issue has been resolved and that the sensors are now in proper correlation.
Cost to Fix P2073
The cost of repairing a P2073 code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, replacing a faulty sensor can cost anywhere from $100 to $300, including parts and labor. Wiring repairs or ECM replacement can increase the cost further. Additionally, diagnosis time and labor rates can vary, so it's recommended to check with local auto repair shops for a more accurate estimate based on your vehicle make and model.
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Code P2073 Information for Specific Makes
- P2073 Ford — Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Idle
Frequently Asked Questions about P2073 Code
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