The P2119 trouble code is a diagnostic trouble code (DTC) that indicates a malfunction in the throttle actuator control system, specifically related to the throttle body range and performance. This code is typically triggered when the Powertrain Control Module (PCM) detects that the throttle actuator is not functioning within its expected parameters. It is crucial for vehicle owners and DIY mechanics to understand this code, as it can lead to significant performance issues, including reduced engine power and potential safety risks.
Understanding the causes, symptoms, and solutions for the P2119 code can help you address this issue effectively and maintain your vehicle’s performance.
| P2119 Code Meaning | P2119 Code Common Causes |
|---|---|
| Throttle Actuator ‘A’ Control Throttle Body Range/Performance | Faulty throttle body |
| Throttle actuator control system malfunction | Dirty throttle plate or linkage |
| Throttle position sensor error | Defective accelerator pedal position sensor |
| Electronic throttle control failure | Corroded or damaged connectors |
| PCM malfunction (rare) | Faulty wiring or damaged circuits |
Symptoms of P2119 Code
When the P2119 code is triggered, drivers may experience a variety of symptoms that can affect vehicle performance:
- Check Engine Light: The most immediate indication of an issue is the illumination of the check engine light on the dashboard.
- Reduced Power: The vehicle may enter “limp mode,” where engine power is significantly reduced to prevent further damage.
- Poor Throttle Response: Drivers may notice a delay in acceleration or unresponsiveness when pressing the accelerator pedal.
- Engine Stalling: In severe cases, the engine may stall or fail to start altogether.
- Increased Fuel Consumption: A malfunctioning throttle actuator can lead to inefficient fuel usage.
Technical Explanation of P2119 Code
The P2119 code is associated with vehicles equipped with an electronic throttle control system (ETCS). In these systems, the PCM relies on inputs from various sensors, including:
- Throttle Position Sensor (TPS): Monitors the position of the throttle plate.
- Accelerator Pedal Position Sensor (APPS): Detects how much pressure is applied to the accelerator pedal.
The PCM uses this information to determine how much air should enter the engine. If it finds discrepancies between expected and actual throttle positions, it triggers the P2119 code. This can occur due to mechanical failures in the throttle body, sensor malfunctions, or issues with wiring and connectors.
Step-by-Step Diagnosis of P2119 Code
Diagnosing a P2119 trouble code involves several steps:
- Scan for Codes: Use an OBD-II scanner to confirm that the P2119 code is present and check for any additional codes that may provide more context.
- Visual Inspection: Inspect the throttle body and associated wiring for signs of damage, corrosion, or disconnection.
- Check Throttle Body Operation: Manually inspect if the throttle plate opens and closes smoothly without sticking or binding.
- Monitor Live Data: Use a scan tool to observe live data from both the TPS and APPS while operating the vehicle. Look for irregularities in readings.
- Test Components: Test the TPS and APPS for proper voltage and resistance according to manufacturer specifications.
- Check Wiring: Inspect all wiring related to the throttle control system for continuity and integrity.
- Perform Throttle Relearn Procedure: If no issues are found but the code persists, perform a throttle relearn procedure as per manufacturer guidelines.
- Test Drive: After repairs or adjustments are made, take the vehicle for a test drive and rescan for codes.
Solution Methods for P2119 Code
Addressing a P2119 trouble code may involve various solutions depending on what was found during diagnosis:
Cleaning or Replacing Throttle Body
- Symptoms: If you notice sticking or excessive dirt on the throttle plate.
- Solution Steps:
- Remove any carbon buildup from the throttle body using an appropriate cleaner.
- If cleaning does not resolve issues, consider replacing the throttle body assembly.
- Cost Estimate: Cleaning can cost around $50-$100; replacement typically ranges from $300-$600 including parts and labor.
Replacing Faulty Sensors
- Symptoms: Erratic behavior in acceleration response.
- Solution Steps:
- Replace any faulty TPS or APPS based on diagnostic results.
- Cost Estimate: Sensor replacements generally cost between $100-$200 each including labor.
Repairing Wiring Issues
- Symptoms: Visible damage or corrosion in wiring harnesses.
- Solution Steps:
- Repair or replace damaged wiring and connectors as necessary.
- Cost Estimate: Depending on severity, repairs could range from $50-$300.
PCM Replacement (Last Resort)
- Symptoms: Persistent issues after other repairs have been made.
- Solution Steps:
- If all other components are functioning correctly but issues persist, consider replacing the PCM.
- Cost Estimate: PCM replacement can be expensive, typically ranging from $500-$1200 including programming costs.
Warnings and Recommendations
- Always follow manufacturer-specific guidelines when diagnosing and repairing issues related to DTCs like P2119.
- If you’re not confident in performing these diagnostics or repairs yourself, seek professional assistance from a certified mechanic.
- Ignoring this trouble code can lead to more severe engine performance problems and increased repair costs over time.
Closing Paragraph
The P2119 trouble code signals an important issue within your vehicle’s electronic throttle control system that should not be ignored. By understanding its meaning, symptoms, and potential causes, you can take proactive steps toward diagnosing and resolving this problem effectively. Whether you choose to tackle it yourself or seek professional help, addressing this code promptly will help ensure your vehicle operates safely and efficiently.
Frequently Asked Questions About P2119
- What does P2119 mean?
The P2119 code indicates that there is an issue with the throttle actuator control system’s range or performance. - How serious is a P2119 code?
This code can lead to reduced engine power and performance issues; it’s essential to address it promptly. - Can I drive my car with a P2119 code?
While it may be possible to drive short distances, it’s not recommended as it could lead to further damage. - What are common repairs for a P2119 code?
Common repairs include cleaning or replacing the throttle body, replacing faulty sensors, or repairing damaged wiring. - How much does it cost to fix a P2119 code?
The cost varies widely based on repairs needed but typically ranges from $50 for cleaning to over $1200 for PCM replacement. - Will clearing the code fix my car?
Clearing the code will not fix underlying issues; it only resets the check engine light. - What tools do I need to diagnose a P2119 code?
A basic OBD-II scanner, multimeter for testing sensors, and possibly specialized tools for inspecting wiring. - When should I seek professional help for a P2119 code?
If you’re unable to diagnose or repair issues after following basic troubleshooting steps, it’s best to consult a certified mechanic.