AutoCodes – Infiniti – P050B Infiniti

P050B Infiniti Code - Cold Start Ignition Timing Performance

Quick Answer

The Engine Control Module (ECM) controls ignition timing and engine idle speed when the engine is started with pre-warming up condition. Common causes include Lack of intake air volume, Faulty Fuel injection system, Faulty Engine Control Module (ECM). 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: P050B Infiniti indicates Cold Start Ignition Timing Performance.
Common causes: Common causes include Lack of intake air volume, Faulty Fuel injection system, Faulty Engine Control Module (ECM).
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 2,203

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 May 21, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P050B Infiniti Description

The Engine Control Module (ECM) controls ignition timing and engine idle speed when the engine is started with pre-warming up condition. This control promotes the activation of a three-way catalyst by heating the catalyst and reduces emissions. The Diagnostic Trouble Code (DTC) will set when the ECM does not control ignition timing properly when the engine is started with pre-warming up condition.

OBDII Code P050B Infiniti - Cold Start Ignition Timing Performance - AutoCodes.com — P050B Infiniti Code - Cold Start Ignition Timing Performance

What does this mean?

What are the Possible Causes of the DTC P050B Infiniti?

Lack of intake air volume
Faulty Fuel injection system
Faulty Engine Control Module (ECM)

How to Fix the DTC P050B Infiniti?

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 P050B Infiniti 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.