AutoCodes – Generic – P2429

P2429 Code - Exhaust Gas Temperature Too High Bank 2

Quick Answer

The Powertrain Control Module (PCM) monitors the Exhaust Gas Temperature (EGT) sensor for a biased signal value. Common causes include Faulty Exhaust Gas Temperature (EGT), Exhaust Gas Temperature (EGT) harness is open or shorted, Exhaust Gas Temperature (EGT) 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: P2429 indicates Exhaust Gas Temperature Too High Bank 2.
Common causes: Common causes include Faulty Exhaust Gas Temperature (EGT), Exhaust Gas Temperature (EGT) harness is open or shorted, Exhaust Gas Temperature (EGT) 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 4,397

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2429 Description

The Powertrain Control Module (PCM) monitors the Exhaust Gas Temperature (EGT) sensor for a biased signal value. Following an 8-hour soak, the PCM records the EGT sensor temperature value at key ON, engine OFF. After several minutes of vehicle operation at vehicle speeds greater than 40.2 km/h (25 mph) the PCM calculates an expected key ON, engine OFF value. The PCM determines what the expected EGT value at key ON, engine OFF should have been based on inputs from other sensors. The test fails when the difference between the expected calculated value and the actual recorded value is greater than 40°C (72°F).

OBDII Code P2429 - Exhaust Gas Temperature Too High Bank 2 - AutoCodes.com — P2429 Code - Exhaust Gas Temperature Too High Bank 2

What does this mean?

What are the Possible Causes of the DTC P2429?

Faulty Exhaust Gas Temperature (EGT)
Exhaust Gas Temperature (EGT) harness is open or shorted
Exhaust Gas Temperature (EGT) circuit poor electrical connection
Extreme changes in ambient temperature soon after key ON, engine running

How to Fix the DTC P2429?

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 P2429 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 P2429 code?

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Information for Specific Makes

P2429 Dodge — Exhaust Gas Temperature Too High Bank 2
P2429 Ford — Exhaust Gas Temperature Too High Bank 2
P2429 Lincoln — Exhaust Gas Temperature Too High Bank 2
P2429 Mercury — Exhaust Gas Temperature Too High Bank 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.