What is the P2119 Diagnostic Trouble Code?
The P2119 code indicates an issue within the vehicle’s electronic throttle control system. When you press the accelerator pedal, the throttle is supposed to open proportionally to your input, regulating engine power. The Powertrain Control Module (PCM) continuously monitors the throttle position sensor and the throttle body to ensure proper operation. If the PCM detects a discrepancy between the expected throttle position and the actual position, it triggers the P2119 code. This often results in the vehicle entering a “limp mode” to prevent further damage, significantly reducing engine power and performance to protect the system.
Deciphering the Meaning of P2119
The code P2119 stands for “Throttle Actuator Control Throttle Body Range/Performance.” It signifies that the electric throttle control system has detected a malfunction related to throttle operation, particularly an abnormal range or performance discrepancy. The throttle body, controlled electronically, opens and closes based on signals from the throttle position sensor. When this system fails or malfunctions, the PCM records this code to alert the driver of a potential issue with throttle control efficiency, responsiveness, or safety.
Common Causes Behind P2119
- Malfunctioning throttle body or actuator motor
- Dirty or obstructed throttle plate or valve
- Faulty throttle position sensor or accelerator pedal sensor
- Damaged wiring or corroded connectors in the throttle control circuit
- Electrical short or open circuits in throttle control wiring
- Defective PCM or engine control module
- Mechanical issues such as stuck or binding throttle linkage
Typical Symptoms Associated with P2119
The severity of the problem varies based on the underlying fault, but typical symptoms include:
- Engine fails to respond properly to accelerator input
- Unusual or rough idling
- Sudden loss of power or acceleration
- Check Engine Light (CEL) illuminated on the dashboard
- Engine enters “limp mode” to prevent damage
- Increased fuel consumption
- Possible stalling or hesitation during acceleration
Effective Solutions to Fix P2119
Addressing the P2119 error involves a systematic inspection and repair of the throttle control components. Here are the recommended steps:
- Inspect and Clean the Throttle Body – Remove any dirt, carbon deposits, or obstructions from the throttle body and plate to restore smooth operation.
- Test and Replace the Throttle Position Sensor – Verify sensor accuracy with a diagnostic scanner; replace if faulty.
- Check the Wiring and Connectors – Examine all wiring harnesses and connectors for damage, corrosion, or loose connections, repairing or replacing as needed.
- Inspect the Throttle Actuator Motor – If the motor is unresponsive or faulty, replace it to restore proper throttle response.
- Update or Reprogram the PCM – Ensure the engine control module has the latest firmware; reprogramming may be necessary.
- Mechanical Repairs – Address any stuck, binding, or damaged linkage components that could impair throttle movement.
Cost Estimates for Repairing P2119
The overall cost to resolve the P2119 code varies depending on the specific issue and vehicle model. Typical expenses include:
- Throttle body cleaning: $50 – $150 USD
- Throttle position sensor replacement: $100 – $300 USD
- Throttle actuator motor replacement: $300 – $1000+ USD
- Wiring repairs and connector replacements: $100 – $300 USD
- PCM reprogramming or replacement: costs vary based on vehicle make and dealer charges
Always seek a professional diagnosis and estimate before proceeding with repairs to ensure accuracy and avoid unnecessary expenses.