Fix P247B: STEP-BY-STEP diagnostic GUIDE!

The P247B: Exhaust Gas Temperature Out of Range Bank 1 Sensor 4 indicates that the exhaust gas temperature reading from Bank 1 Sensor 4 is outside the expected range. This problem could be due to a faulty sensor or issues within the sensor circuit, leading to incorrect exhaust temperature management, which can negatively affect engine performance and emissions control.

P247B – Quick Overview

CodeInformation
MeaningP247B: Exhaust Gas Temperature Out of Range Bank 1 Sensor 4
Is it serious?Yes, incorrect exhaust temperature readings may lead to improper engine performance and elevated emissions, which could ultimately cause long-term damage if not addressed.
Possible causes– Exhaust gas temperature reading is out of expected range for Bank 1 Sensor 4
– Faulty sensor
– Issues with the sensor circuit
How to diagnose?– Inspect the exhaust gas temperature sensor for Bank 1 Sensor 4
– Check the sensor circuit for any issues
– Replace faulty components if needed

P247B Meaning

The P247B: Exhaust Gas Temperature Out of Range Bank 1 Sensor 4 code signifies that the sensor for monitoring the exhaust gas temperature at Bank 1 Sensor 4 is reporting values that are beyond the expected range. This could result from a faulty sensor, damaged wiring, or a problem in the sensor circuit, which can affect how efficiently the engine manages exhaust gases and lead to potential performance or emission issues.

Step-by-step diagnostic guide

ActionDescriptionTools Needed
Check for Other CodesUse an OBD-II scanner to check if there are any other related codes. Other codes may provide clues to help identify the underlying issue affecting the sensor.OBD-II Scanner
Inspect Sensor and Wiring VisuallyExamine the exhaust gas temperature sensor for physical damage such as cracks, burns, or discoloration. Check the wiring leading to Bank 1 Sensor 4 for any signs of fraying, wear, or corrosion that could disrupt proper sensor operation.Flashlight, Safety Gloves
Test Sensor OutputUse a diagnostic tool to measure the real-time output from the exhaust gas temperature sensor for Bank 1 Sensor 4 while the engine is running. Compare these readings to the manufacturer’s specifications to determine if the sensor is giving incorrect values.Diagnostic Tool, Manufacturer’s Specifications
Check Sensor Circuit ContinuityUse a multimeter to test the continuity and resistance of the sensor circuit. Ensure there are no open circuits, high resistance, or shorts that could lead to out-of-range readings.Multimeter
Inspect and Clean ConnectorsVerify that the connectors to the sensor are clean and properly connected. Use contact cleaner if there is dirt or corrosion present. Replace any damaged connectors to ensure a secure electrical connection.Contact Cleaner, Replacement Connectors
Replace Faulty Sensor or ComponentsIf the exhaust gas temperature sensor is found to be faulty, replace it with a new, manufacturer-approved component. Also, replace any wiring or connectors that are not in good condition.Replacement Sensor, Basic Hand Tools
Clear Code and Test DriveClear the P247B code using an OBD-II scanner and conduct a test drive to monitor the sensor’s performance and ensure that the exhaust temperature is within the expected range.OBD-II Scanner, Vehicle Owner’s Manual
Recheck for CodesAfter the test drive, use the OBD-II scanner again to verify that the P247B code has been cleared and no new codes have been detected. If the code persists, further investigation will be needed.OBD-II Scanner
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