AutoCodes – Honda – P0203 2018 Honda CR-V

P0203 2018 Honda CR-V Code - No. 3 Cylinder Injector Circuit Malfunction

Quick Answer

The injector supplies fuel to the engine and is controlled by the Powertrain Control Module (PCM) ON/OFF command. Common causes include Faulty No, 3 Cylinder Injector, No. 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: P0203 2018 Honda CR-V indicates No. 3 Cylinder Injector Circuit Malfunction.
Common causes: Common causes include Faulty No, 3 Cylinder Injector, No.
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 386

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 15, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0203 2018 Honda CR-V Description

The injector supplies fuel to the engine and is controlled by the Powertrain Control Module (PCM) ON/OFF command. In the PCM, the injector driver receives a drive command from the Central processing unit (CPU) and drives the injector. The CPU monitors injector currents and returns a signal from the injector driver to monitor the terminal voltage of PCM. If the monitored conditions are abnormal for a specified time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0203 2018 Honda CR-V - No. 3 Cylinder Injector Circuit Malfunction - AutoCodes.com — P0203 2018 Honda CR-V Code - No. 3 Cylinder Injector Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0203 2018 Honda CR-V?

Faulty No. 3 Cylinder Injector
No. 3 Cylinder Injector harness is open or shorted
No. 3 Cylinder Injector circuit poor electrical connection
Faulty Injector Relay
Faulty Powertrain Control Module (PCM)
Faulty High Pressure Fuel Pump

How to Fix the DTC P0203 2018 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0203 2018 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 P0203 2018 Honda CR-V code?

Need more information on how to fix the P0203 2018 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0203 2018 Honda CR-V 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 P0203 2018 Honda CR-V Code

1. What are the common symptoms of OBDII code P0203 (No. 3 Cylinder Injector Circuit Malfunction) in a 2018 Honda CR-V?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P0203 in a 2018 Honda CR-V?

- The code P0203 may be caused by issues such as a faulty fuel injector, wiring problems in the injector circuit, a poor electrical connection, or a problem with the Engine Control Module (ECM).

3. How can I diagnose and repair OBDII code P0203 on the No. 3 Cylinder Injector in my 2018 Honda CR-V?

- Diagnosing and repairing P0203 involves checking the injector for proper operation, inspecting the wiring and connectors for any damage, testing the injector circuit for continuity, and scanning the ECM for additional fault codes.

4. Can a dirty fuel injector cause OBDII code P0203 in a 2018 Honda CR-V?

- Yes, a dirty or clogged fuel injector can disrupt the injector circuit and lead to code P0203. Cleaning or replacing the injector may resolve the issue.

5. Are there any simple tips to troubleshoot OBDII code P0203 on a 2018 Honda CR-V before seeking professional help?

- Before seeking professional help, you can visually inspect the injector and its connections, check for any loose or damaged wires, and reset the ECM to see if the code reappears.

6. Is it safe to drive my 2018 Honda CR-V with OBDII code P0203 (No. 3 Cylinder Injector Circuit Malfunction) illuminated?

- It is not recommended to drive your vehicle with code P0203 present, as it can lead to engine performance issues and potential damage. Have the issue diagnosed and repaired as soon as possible.

7. How much does it typically cost to repair OBDII code P0203 on the No. 3 Cylinder Injector in a 2018 Honda CR-V?

- The cost of repairing P0203 can vary depending on the root cause of the issue. It may range from a simple fix like cleaning the injector to a more complex repair involving replacing the fuel injector or repairing the wiring harness.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0203 in a 2018 Honda CR-V?

- Depending on the underlying cause, a DIY enthusiast with basic automotive knowledge may be able to address simple issues like loose connections or dirty injectors. However, more complex problems may require professional expertise.

9. Will resetting the ECM clear OBDII code P0203 on a 2018 Honda CR-V?

- Resetting the ECM may temporarily clear the code, but if the underlying issue causing P0203 is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.

10. How long does it take to repair OBDII code P0203 on the No. 3 Cylinder Injector in a 2018 Honda CR-V?

- The repair time for code P0203 can vary based on the specific issue. Simple fixes like cleaning a fuel injector may take less time, while more complex repairs such as replacing the injector or repairing wiring may require more time.