AutoCodes – Lexus – P3190 Lexus

P3190 Lexus Code - Poor Engine Power

Quick Answer

The Hybrid Vehicle Electronic Control Unit (HV ECU) delivers data to the Engine Control Module (ECM) for such items as power output required for the engine (required output), estimated torque produced by the engine, engine RPM of control target RPM and whether engine is in start mode or not. Common causes include Air induction system malfunction, Defective throttle body, Improper fuel pressure. 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
P3190 Lexus indicates Poor Engine Power.
Common causes
Common causes include Air induction system malfunction, Defective throttle body, Improper fuel pressure.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 16,031
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 13, 2021
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Code P3190 Lexus Description

The Hybrid Vehicle Electronic Control Unit (HV ECU) delivers data to the Engine Control Module (ECM) for such items as power output required for the engine (required output), estimated torque produced by the engine, engine RPM of control target RPM and whether engine is in start mode or not. Based on required output and target RPM, the ECM calculates a target torque that is to be produced by the engine and compares it with the estimated torque. If estimated torque is very low compared with the target torque or engine start mode continues at engine RPM or for the duration calculated by engine coolant temperature, as the abnormal condition is detected. The Diagnostic Trouble Code (DTC) P3190 is set if following conditions continue at a fixed engine RPM or for a fixed length of time:
-Communication with HV ECU is normal.
-Engine RPM is a fixed value or more.
-Engine start mode is not active.
-Target torque is at a fixed value or more.
-Ratio of estimated torque against target torque is less than 20 percent.
OBDII Code P3190 Lexus - Poor Engine Power - AutoCodes.com
P3190 Lexus Code - Poor Engine Power

What are the Possible Causes of the DTC P3190 Lexus?

  • Air induction system malfunction.
  • Defective throttle body.
  • Improper fuel pressure.
  • Defective engine.
  • Defective Mass Airflow (MAF) meter.
  • Vehicle is out of fuel.
  • Defective Engine Coolant Temperature (ECT) sensor.
  • Defective crankshaft position sensor.
  • Defective camshaft position sensor.
  • Defective Engine Control Module (ECM).

How to Fix the DTC P3190 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P3190 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P3190 Lexus code?

Need more information on how to fix the P3190 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3190 Lexus code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P3190 Lexus Code

1. What are the common symptoms of OBDII code P3190 in a Lexus indicating poor engine power?

- Common symptoms include reduced engine performance, hesitation during acceleration, and overall loss of power while driving.

2. What are some possible causes of OBDII code P3190 in a Lexus related to poor engine power?

- Potential causes include a faulty oxygen sensor, issues with the fuel system, ignition problems, or a malfunctioning mass airflow sensor.

3. How can I diagnose the OBDII code P3190 in a Lexus when experiencing poor engine power?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking for any related codes, and performing a thorough inspection of the engine components.

4. What are some DIY repair tips for resolving OBDII code P3190 in a Lexus associated with poor engine power?

- DIY repair tips may include checking and replacing the oxygen sensor, inspecting the air filter, cleaning the mass airflow sensor, and ensuring proper fuel pressure.

5. Can driving with OBDII code P3190 in a Lexus causing poor engine power damage the vehicle?

- Continuing to drive with this code can potentially lead to further damage to the engine or other components, so it's important to address the issue promptly.

6. Is it safe to reset the OBDII code P3190 in a Lexus without addressing the underlying issue of poor engine power?

- Simply resetting the code without fixing the root cause may temporarily remove the warning light, but the underlying issue leading to poor engine power will persist and should be addressed.

7. How much does it typically cost to repair OBDII code P3190 in a Lexus attributed to poor engine power?

- The cost of repairs can vary depending on the specific cause of the issue, but it's advisable to consult a professional mechanic for an accurate assessment and estimate.

8. Are there any preventative measures to avoid encountering OBDII code P3190 in a Lexus associated with poor engine power?

- Regular maintenance, such as timely replacement of air filters, oxygen sensors, and spark plugs, can help prevent issues that may trigger the code and affect engine performance.

9. Can a DIY enthusiast with basic automotive knowledge resolve OBDII code P3190 in a Lexus causing poor engine power?

- Depending on the cause, some DIY enthusiasts may be able to address the issue, but it's essential to have a good understanding of automotive systems and access to the necessary tools.

10. How long can I safely drive with OBDII code P3190 in a Lexus indicating poor engine power before seeking repairs?

- It's recommended to address the issue as soon as possible to prevent potential damage and ensure optimal engine performance. Driving with the problem unresolved may lead to further complications.

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