why does my Honda CR-V Sixth Generation (2023-present) check engine light keep coming on

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to reset the engine control module (ECM).

2. Addressing Error Codes

• Use the OBD-II scanner to retrieve and document the error codes.
• Research the codes to determine the specific issue (e.g., P0420 for catalytic converter efficiency).

3. Inspect and Replace Components

• If codes indicate a faulty oxygen sensor:

  1. Locate the oxygen sensor (upstream or downstream).
  2. Disconnect the wiring harness.
  3. Remove the oxygen sensor with a socket and replace it with a new one.
  4. Reconnect the wiring harness.

• If codes indicate a misfire:

  1. Inspect and replace spark plugs and ignition coils as needed.
  2. Check for proper gap on spark plugs and install them with the manufacturer’s specified torque (typically around 13-16 lb-ft).

4. Test Fuel System

• If fuel system issues are indicated:
  1. Check the fuel pressure using a fuel pressure gauge.
  2. If pressure is low, inspect the fuel pump and filter for clogs or failure.
  3. Replace the fuel filter if necessary.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal after all repairs are made.
• Use the OBD-II scanner to clear the trouble codes and reset the check engine light.