AutoCodes – Toyota – P011B 2018 Toyota RAV4

P011B 2018 Toyota RAV4 Code - Engine Coolant Temperature/Intake Air Temperature Correlation

Quick Answer

The engine has two temperature sensors, an Engine Coolant Temperature (ECT) sensor and an Intake Air Temperature (IAT) sensor, to detect the temperature while the engine is in operation. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature sensor harness is open or shorted, Engine Coolant Temperature sensor circuit poor electrical connection. 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: P011B 2018 Toyota RAV4 indicates Engine Coolant Temperature/Intake Air Temperature Correlation.
Common causes: Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature sensor harness is open or shorted, Engine Coolant Temperature sensor circuit poor electrical connection.
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 Popularity 274

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 23, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P011B 2018 Toyota RAV4 Description

The engine has two temperature sensors, an Engine Coolant Temperature (ECT) sensor and an Intake Air Temperature (IAT) sensor, to detect the temperature while the engine is in operation. A thermistor, whose resistance value varies according to the temperature, is built into each sensor. When the temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the Engine Control Module (ECM) as voltage changes. Based on these temperature signals output from the sensors, the ECM determines the fuel injection time and the ignition timing to control the engine.
The ECM monitors the difference between the engine coolant temperature and the intake air temperature when the engine is started cold to accurately detect the engine temperature conditions. The monitor runs when the engine is started after 7 hours or more have elapsed since the engine was stopped (ignition switch turned off) on the previous trip. If the difference between the engine coolant temperature and the intake air temperature on a cold start exceeds 25°C (45°F), the ECM interprets this as a malfunction in the engine coolant temperature sensor circuit and intake air temperature sensor circuit and stores the Diagnostic Trouble Code (DTC).

OBDII Code P011B 2018 Toyota RAV4 - Engine Coolant Temperature/Intake Air Temperature Correlation - AutoCodes.com — P011B 2018 Toyota RAV4 Code - Engine Coolant Temperature/Intake Air Temperature Correlation

What does this mean?

What are the Possible Causes of the DTC P011B 2018 Toyota RAV4?

Faulty Engine Coolant Temperature (ECT) sensor
Engine Coolant Temperature sensor harness is open or shorted
Engine Coolant Temperature sensor circuit poor electrical connection
Faulty Intake Air Temperature (IAT) sensor
Intake Air Temperature sensor harness is open or shorted
Intake Air Temperature sensor circuit poor electrical connection

How to Fix the DTC P011B 2018 Toyota RAV4?

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 P011B 2018 Toyota RAV4 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 P011B 2018 Toyota RAV4 code?

Need more information on how to fix the P011B 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P011B 2018 Toyota RAV4 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 P011B 2018 Toyota RAV4 Code

1. What does OBDII code P011B on a 2018 Toyota RAV4 indicate?

The P011B code in a 2018 Toyota RAV4 points to an issue with the correlation between the engine coolant temperature sensor and the intake air temperature sensor.

2. What are the common symptoms of the P011B trouble code in a 2018 Toyota RAV4?

Common symptoms of the P011B code may include rough idling, poor fuel efficiency, engine stalling, and the illumination of the check engine light on the dashboard.

3. What are the possible causes of the P011B trouble code in a 2018 Toyota RAV4?

Possible causes of the P011B code include a faulty engine coolant temperature sensor, a malfunctioning intake air temperature sensor, wiring issues, or a problem with the engine control module (ECM).

4. How can I diagnose the P011B trouble code in my 2018 Toyota RAV4?

Diagnosing the P011B code involves using an OBDII scanner to retrieve the code, checking the engine coolant temperature sensor and intake air temperature sensor readings, inspecting the wiring for any damage, and testing the ECM.

5. Can I continue driving my 2018 Toyota RAV4 with the P011B trouble code?

It is not recommended to continue driving your vehicle with the P011B code present, as it can lead to potential engine performance issues and further damage if left unresolved.

6. How can I repair the P011B trouble code in my 2018 Toyota RAV4?

Repairing the P011B code may involve replacing the faulty engine coolant temperature sensor or intake air temperature sensor, repairing any damaged wiring, or reprogramming the engine control module (ECM) if necessary.

7. Are there any DIY tips for resolving the P011B trouble code in a 2018 Toyota RAV4?

While some basic troubleshooting like checking sensor connections and wiring can be done DIY, it is recommended to seek professional help for an accurate diagnosis and repair of the P011B code.

8. Will resetting the OBDII system clear the P011B trouble code in my 2018 Toyota RAV4?

Resetting the OBDII system may temporarily clear the P011B code, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

9. How much does it cost to fix the P011B trouble code in a 2018 Toyota RAV4?

The cost of fixing the P011B code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a mechanic easily resolve the P011B trouble code in a 2018 Toyota RAV4?

A qualified mechanic familiar with Toyota vehicles should be able to diagnose and repair the P011B code efficiently by following proper diagnostic procedures and using the right tools and equipment.