P2030, P2031, P2032, P2033, P2034, P2035, P2036 Exhaust gas temperature sensor circuit low/high, Bank A/Bank B, sensor 2

Land Rover OBD-II Trouble Codes -------------------------------------------------The diagnostic trouble codes (DTCs) P2030 through P2036 all relate to issues with the Exhaust Gas Temperature (EGT) sensor circuit on Bank A or Bank B, specifically Sensor 2. Sensor 2 is typically the downstream sensor located after the catalytic converter. Here's a breakdown of each code:

1. **P2030 - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2 Low:**

   - Indicates a low voltage condition in the EGT sensor circuit for Bank 1 Sensor 2.

2. **P2031 - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2 High:**

   - Indicates a high voltage condition in the EGT sensor circuit for Bank 1 Sensor 2.

3. **P2032 - Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2:**

   - Similar to P2030, but for Bank 2 Sensor 2.

4. **P2033 - Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 2:**

   - Similar to P2031, but for Bank 2 Sensor 2.

5. **P2034 - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2 Range/Performance:**

   - Suggests a range or performance issue in the EGT sensor circuit for Bank 1 Sensor 2.

6. **P2035 - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2 Heater Circuit Malfunction:**

   - Indicates a malfunction in the heater circuit of the EGT sensor for Bank 1 Sensor 2.

7. **P2036 - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 Range/Performance:**

   - Similar to P2034, but for Bank 2 Sensor 2.

### Possible Causes:

1. **Faulty Exhaust Gas Temperature Sensor (Bank 1 or Bank 2, Sensor 2):** Issues with the EGT sensor itself, such as sensor degradation or failure.

2. **Wiring Issues:** Problems with the wiring or connectors associated with the EGT sensor circuit.

3. **Heater Circuit Malfunction:** If applicable, issues with the heater circuit within the EGT sensor.

4. **Exhaust Leaks:** Leaks in the exhaust system could impact sensor readings.

5. **Faulty Catalytic Converter:** A malfunctioning catalytic converter may affect EGT sensor readings.

6. **Sensor Placement:** Incorrect sensor placement or installation.

### Diagnostic Steps:

1. **Inspect EGT Sensor:** Check the EGT sensor for signs of damage or wear. If it appears faulty, consider replacement.

2. **Check Wiring and Connectors:** Inspect the wiring and connectors associated with the EGT sensor circuit. Look for any signs of damage, corrosion, or loose connections.

3. **Test Sensor Operation:** Use a multimeter or diagnostic tool to test the operation of the EGT sensor. Check for proper resistance or voltage readings.

4. **Verify Heater Circuit:** If applicable, check the heater circuit within the EGT sensor for proper operation.

5. **Inspect Exhaust System:** Check for exhaust leaks and ensure the integrity of the catalytic converter.

6. **Perform Continuity Tests:** Check for continuity in the wiring from the sensor to the Engine Control Module (ECM).

7. **Clear Codes:** After addressing any identified issues, clear the trouble codes and monitor the system for recurrence.

8. **Consider Professional Assistance:** If you are unsure about diagnosing or addressing these issues yourself, or if the faults persist, it's advisable to consult with a qualified mechanic or technician.

Addressing the root cause of the EGT sensor circuit faults is essential for proper emission control and engine performance. If in doubt or if the faults persist, seeking professional assistance is recommended for a thorough diagnosis and effective repair.