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P codepowertrainMedium severity

P2035Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2

The OBD2 code P2035 indicates a low voltage reading from the exhaust gas temperature sensor circuit for Bank 2, Sensor 2, which suggests a potential issue with the sensor or its wiring

Definition

The OBD2 code P2035 indicates a low voltage reading from the exhaust gas temperature sensor circuit for Bank 2, Sensor 2, which suggests a potential issue with the sensor or its wiring

Common causes

  • Faulty exhaust gas temperature sensor
  • Damaged wiring or connectors
  • Short circuit in the sensor circuit
  • Open circuit in the sensor circuit
  • Corroded or loose connections
  • Faulty engine control module (ECM)
  • Exhaust leaks affecting sensor readings

Common misdiagnoses

  • Faulty exhaust gas temperature sensor
  • Wiring issues or short circuits in the sensor circuit
  • Faulty engine control module (ECM)
  • Exhaust leaks
  • Incorrectly diagnosed catalytic converter issues
  • Misinterpretation of related OBDII codes
  • Faulty connectors or terminals in the sensor circuit
  • Issues with the diesel particulate filter (DPF) system

Troubleshooting steps

  1. 1.Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues

  2. 2.Inspect the EGT Sensor

    Visual Inspection: Check the EGT sensor for physical damage, corrosion, or loose connections. Ensure that the wiring harness and connectors are intact and free from damage

  3. 3.Sensor Location

    Confirm that you are checking the correct sensor (Bank 2, Sensor 2)

  4. 4.Test the EGT Sensor

    Resistance Check: Use a multimeter to measure the resistance of the EGT sensor. Compare the readings to the manufacturer's specifications. A significantly out-of-spec reading may indicate a faulty sensor

  5. 5.Voltage Check

    With the engine running, check the voltage output of the EGT sensor. It should fall within the specified range. A low voltage reading may indicate a faulty sensor

  6. 6.Inspect Wiring and Connectors

    Wiring Inspection: Look for any frayed, damaged, or corroded wires in the EGT sensor circuit. Pay special attention to areas where the wiring may be exposed to heat or abrasion

  7. 7.Connector Check

    Ensure that the connectors are clean and securely connected. Corrosion or poor connections can lead to low voltage readings

  8. 8.Check for Ground Issues

    Ensure that the EGT sensor has a good ground connection. A poor ground can cause low voltage readings. Use a multimeter to check for continuity between the sensor ground and the vehicle ground

  9. 9.Inspect the Exhaust System

    Check for any exhaust leaks near the EGT sensor. Exhaust leaks can affect sensor readings and lead to erroneous codes

  10. 10.Test the Engine Control Module (ECM)

    If all other components check out, there may be an issue with the ECM itself. This is less common, but it can happen. Consult a professional for further diagnosis if you suspect an ECM issue

  11. 11.Clear Codes and Test Drive

    After performing repairs or replacements, clear the trouble codes using the OBD-II scanner. Take the vehicle for a test drive to see if the code returns

  12. 12.Consult Repair Manual

    Refer to the vehicle's service manual for specific testing procedures, specifications, and wiring diagrams related to the EGT sensor circuit

  13. 13.Seek Professional Help

    If you are unable to diagnose or resolve the issue, consider seeking assistance from a qualified mechanic or automotive technician. By following these steps, you should be able to identify and address the cause of the P2035 code