AutoCodes – Generic – P2489

P2489 Code - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5

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 5, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P2489 indicates Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 5, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 5 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,658

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 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 P2489 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 P2489 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P2489 - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5 - AutoCodes.com — P2489 Code - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5

What does this mean?

What are the Possible Causes of the DTC P2489?

Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 5
Exhaust Gas Temperature Sensor Bank 2 Sensor 5 harness is open or shorted
Exhaust Gas Temperature Sensor Bank 2 Sensor 5 circuit poor electrical connection
Exhaust leaks
Excessive particulate matter buildup on sensor

How to Fix the DTC P2489?

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 P2489 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 P2489 code?

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Need Help with the Code?

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Information for Specific Makes

P2489 Chevrolet — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5
P2489 Dodge — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5
P2489 Ford — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5
P2489 GMC — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 5

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.