Fix P2143: STEP-BY-STEP diagnostic GUIDE!

The P2143: Exhaust Gas Recirculation (EGR) Vent Control Circuit/Open refers to an open circuit in the EGR vent control. This issue can occur due to a malfunctioning EGR vent control, wiring problems, or an electrical fault that prevents proper EGR system operation.

P2143 – Quick Overview

CodeInformation
MeaningP2143: Exhaust Gas Recirculation Vent Control Circuit/Open
Is it serious?Yes, it can cause improper EGR operation, leading to drivability issues and increased emissions.
Possible causes– Open circuit in the EGR vent control
– Faulty EGR vent control
– Wiring issues
How to diagnose?– Inspect wiring and connectors for the EGR vent control
– Test the EGR vent control for faults
– Check for open circuits

P2143 Meaning

The P2143 code indicates that the exhaust gas recirculation vent control circuit is open. The EGR vent control manages the flow of exhaust gases into the intake to reduce emissions. An open circuit can prevent the EGR system from functioning properly, which may lead to increased emissions and poor engine performance.

Step-by-step diagnostic guide

ActionDescriptionTools Needed
Check for Other CodesUse an OBD-II scanner to check for any related codes that might provide more information about the EGR system fault.OBD-II Scanner
Inspect Wiring and ConnectorsVisually inspect the wiring and connectors leading to the EGR vent control for any signs of damage, loose connections, or corrosion. Repair or replace as needed.Flashlight, Multimeter
Check for Open CircuitsUse a multimeter to check for continuity in the EGR vent control circuit. Identify and repair any open circuits.Multimeter, Wiring Diagram
Test the EGR Vent ControlUse a diagnostic tool to test the operation of the EGR vent control. Verify that it functions as specified by the manufacturer. Replace the vent control if it is faulty.Diagnostic Tool
Inspect for Shorts or FaultsPerform a visual and multimeter inspection of the circuit for any shorts or wiring faults that could disrupt the system’s operation.Flashlight, Multimeter
Clear the Code and Test DriveAfter making repairs or adjustments, clear the code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved.OBD-II Scanner
Recheck for CodesAfter the test drive, re-scan the vehicle to ensure that the P2143 code has not returned.OBD-II Scanner
Bluetooth OBD-II scanners

OBD-II scanner Buyer’s Guide

  • Scanner features explained
  • Different types of scanners
  • Scanners for coding/odometer/ECU/checks
  • Best picks + discount codes

Download PDF FREE

    Leave a Comment