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P2081 is a diagnostic trouble code (DTC) for "Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1
P2081 is an OBD-II generic code for the exhaust gas temperature sensor circuit signal is intermittent for bank 1 sensor 1 to the engine control module (ECM). This means the sensor signal voltage signal return is intermittent within specification.
The engine control module signal return for the exhaust temperature sensor in bank 1 sensor 1 is not giving a steady reading output. The signal is within specifications when it is working properly.
The ECM turns on the Check Engine Light if the ECM detects a voltage return that is erratic or not giving a steady voltage return.
The wiring or connection to the sensor is loose or making poor contact.
The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.
The engine fault may be the P2081 code and also the particulate filter light may be illuminated.
Scans codes and documents the code in the ECM
Diagnoses the code as per the manufacturer's pinpoint test to verify the sensor signal
Checks the sensor connection for loose or corroded terminals
Disconnects the sensor and sees if the voltage of the sensor is steady compared to the scanner readings received through the ECM
Clearing ECM memory codes before checking the freeze frame data of the failure
Failing to clear ECM codes after the P2081 codes are fixed
Replacing the sensor when the connector has corrosion in the connections
Code P2081 is an indication that the sensor or connector may need serviced and/or repaired. The sensor is the most common cause of erratic signals.
Replacing the sensor after the connection is cleaned of any corrosion
Repairing the wiring or connection to the exhaust temperature sensor assembly
Replacing the ECM for an erratic circuit in the ECM temperature sensor circuit
Code P2081 can be generated from loose wire connections from a harness that is not secured and the connection is allowed to flex excessively.
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