AutoCodesHonda – P0238 2020 Honda CR-V

P0238 2020 Honda CR-V Code - Turbocharger Boost Sensor Circuit High Voltage

Quick Answer

The Turbocharger Boost Sensor senses turbocharger boost pressure (vacuum) and converts it into electrical signals. Common causes include Faulty Turbocharger Boost Sensor, Turbocharger Boost Sensor harness is open or shorted, Turbocharger Boost 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
P0238 2020 Honda CR-V indicates Turbocharger Boost Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Turbocharger Boost Sensor, Turbocharger Boost Sensor harness is open or shorted, Turbocharger Boost 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 165
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 15, 2023
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Code P0238 2020 Honda CR-V Description

The Turbocharger Boost Sensor senses turbocharger boost pressure (vacuum) and converts it into electrical signals. The Turbocharger Boost Sensor outputs low signal voltage at high vacuum (throttle valve closed) and high signal voltage at low vacuum (throttle valve wide open). If the signal voltage from the Turbocharger Boost Sensor is a set value, the Powertrain Control Module (PCM) detects a malfunction and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0238 2020 Honda CR-V - Turbocharger Boost Sensor Circuit High Voltage - AutoCodes.com
P0238 2020 Honda CR-V Code - Turbocharger Boost Sensor Circuit High Voltage

What are the Possible Causes of the DTC P0238 2020 Honda CR-V?

  • Faulty Turbocharger Boost Sensor
  • Turbocharger Boost Sensor harness is open or shorted
  • Turbocharger Boost Sensor circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0238 2020 Honda CR-V?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0238 2020 Honda CR-V 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 P0238 2020 Honda CR-V code?

Need more information on how to fix the P0238 2020 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0238 2020 Honda CR-V Code

1. What does the OBDII code P0238 mean on a 2020 Honda CR-V?

P0238 indicates that the Engine Control Module (ECM) has detected a high voltage signal from the Turbocharger Boost Sensor (also called the Manifold Absolute Pressure (MAP) sensor).

2. What are the common symptoms of code P0238 in a 2020 Honda CR-V?

Symptoms may include reduced engine performance, poor fuel economy, the Check Engine Light turning on, and potentially the engine going into limp mode.

3. What causes the P0238 code on a 2020 Honda CR-V?

Common causes include a faulty turbo boost sensor, damaged or shorted wiring, a malfunctioning ECM, or a problem with the turbocharger itself.

4. Can I drive my 2020 Honda CR-V with the P0238 code?

Driving with this code is not recommended, as it may cause reduced performance or damage to the engine and turbocharger if left unresolved.

5. How do you diagnose the P0238 code in a 2020 Honda CR-V?

Diagnosis typically involves using a scan tool to check the freeze frame data, inspecting the turbo boost sensor and related wiring for damage, and testing the sensor’s voltage output.

6. How do you fix the P0238 code on a 2020 Honda CR-V?

Repairs may include replacing the turbo boost sensor, repairing or replacing damaged wiring or connectors, or recalibrating or replacing the ECM if necessary.

7. How much does it cost to fix the P0238 code on a 2020 Honda CR-V?

Repair costs can vary, but replacing a turbo boost sensor typically costs between $100 and $300, including parts and labor.

8. Can a dirty air filter cause the P0238 code on a 2020 Honda CR-V?

A dirty air filter is unlikely to cause this code directly, but it can affect overall engine performance, which may indirectly contribute to turbocharger issues.

9. Does the P0238 code mean my turbocharger is failing?

Not necessarily. While it could indicate a turbocharger problem, the issue is more often related to the boost sensor or its wiring.

10. How can I prevent the P0238 code from occurring on my 2020 Honda CR-V?

Regular maintenance, such as inspecting and cleaning electrical connections, replacing sensors as needed, and ensuring proper turbocharger care, can help prevent this code.

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