AutoCodes – Generic – P2084

P2084 Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2084 indicates Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 22,372

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2084 Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P2084 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P2084 - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2 - AutoCodes.com — P2084 Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2084?

Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 2
Exhaust Gas Temperature Sensor Bank 1 Sensor 2 harness is open or shorted
Exhaust Gas Temperature Sensor Bank 1 Sensor 2 circuit poor electrical connection
Exhaust leaks
Excessive particulate matter buildup on sensor

How to Fix the DTC P2084?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2084 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2084 code?

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Information for Specific Makes

P2084 Chevrolet — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2084 Dodge — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2084 Ford — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2084 GMC — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2084 Lincoln — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
P2084 Mercury — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.