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Engine-Codes – Generic – P1514

P1514 Code - Throttle Actuator Control System Mass Air Flow Performance

Quick Answer

The P1514 diagnostic trouble code (DTC) refers to an issue with the Throttle Actuator Control System Mass Air Flow Performance. Common causes include Dirty or faulty mass airflow sensor, Vacuum leaks in the intake system, Faulty throttle actuator control module. 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
P1514 indicates Throttle Actuator Control System Mass Air Flow Performance.
Common causes
Common causes include Dirty or faulty mass airflow sensor, Vacuum leaks in the intake system, Faulty throttle actuator control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P1514 Description

The P1514 diagnostic trouble code (DTC) refers to an issue with the Throttle Actuator Control System Mass Air Flow Performance. This code indicates that the engine control module (ECM) has detected a discrepancy between the expected mass airflow rate and the actual airflow rate as measured by the throttle actuator control system. The throttle actuator control system is responsible for managing the airflow into the engine to ensure proper combustion and performance. When there is a discrepancy in the mass airflow performance, it can lead to engine hesitation, stalling, poor acceleration, and reduced fuel efficiency.

OBDII Code P1514 - Throttle Actuator Control System Mass Air Flow Performance
P1514 Code - Throttle Actuator Control System Mass Air Flow Performance

Common Causes of P1514

  1. Dirty or faulty mass airflow sensor
  2. Vacuum leaks in the intake system
  3. Faulty throttle actuator control module
  4. Wiring or electrical issues in the throttle actuator control system
  5. Clogged air filter restricting airflow

Symptoms of P1514

  1. Engine hesitation or stumbling during acceleration
  2. Reduced engine power
  3. Rough idle or stalling
  4. Check Engine Light illuminated
  5. Poor fuel economy

How to Fix P1514

  1. Check and clean the mass airflow sensor
  2. Inspect and repair any vacuum leaks in the intake system
  3. Test and potentially replace the throttle actuator control module
  4. Inspect, repair, or replace any damaged wiring or electrical components in the throttle actuator control system
  5. Replace the air filter if it is clogged or dirty

Cost to Fix P1514

The cost of repairing a P1514 code can vary depending on the specific cause of the issue. Typically, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue could fall between $150 and $500. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to obtain quotes from multiple shops to ensure a competitive price.

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Code P1514 Information for Specific Makes

  • P1514 Acura — Throttle Position Sensor / Mass Air Flow Sensor Signal Variation
  • P1514 Audi — Intake Manifold Changeover Valve 2 Circuit Short to Ground
  • P1514 Buick — Throttle Actuator Control System Mass Air Flow Performance
  • P1514 Cadillac — Throttle Actuator Control System Mass Air Flow Performance
  • P1514 Chevrolet — Throttle Actuator Control System Mass Air Flow Performance
  • P1514 GMC — Throttle Actuator Control System Mass Air Flow Performance
  • P1514 Honda — Throttle Position Sensor / Mass Air Flow Sensor Signal Variation
  • P1514 Hyundai — Oil Temperature Sensor
  • P1514 Isuzu — Throttle Position Sensor / Mass Air Flow Sensor Signal Variation
  • P1514 Jaguar — Park / Neutral Position (PNP) Switch High Load Neutral / Drive
  • P1514 Land Rover — Idle Air Control Valve Opening Circuit
  • P1514 Subaru — Idle Air Control Solenoid Valve Signal 3 Circuit Low Input
  • P1514 Volkswagen — Intake Manifold Changeover Valve 2 Circuit Short to Ground
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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