AutoCodes – Mercury – P2087 Mercury

P2087 Mercury Code - Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 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 2 Sensor 2, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P2087 Mercury indicates Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 2, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,183

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P2087 Mercury 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 P2087 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P2087 Mercury - Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2 - AutoCodes.com — P2087 Mercury Code - Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2087 Mercury?

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

How to Fix the DTC P2087 Mercury?

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 P2087 Mercury 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.

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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.