AutoCodes – Infiniti – P1124 Infiniti

P1124 Infiniti Code - Throttle Control Motor Relay Circuit Short

Quick Answer

Power supply for the throttle control motor is provided to the Engine Control Module (ECM) via throttle control motor relay. Common causes include Faulty Throttle Control Motor relay, Throttle Control Motor relay harness is open or shorted, Throttle Control Motor relay 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: P1124 Infiniti indicates Throttle Control Motor Relay Circuit Short.
Common causes: Common causes include Faulty Throttle Control Motor relay, Throttle Control Motor relay harness is open or shorted, Throttle Control Motor relay 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 12,846

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 04, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1124 Infiniti Description

Power supply for the throttle control motor is provided to the Engine Control Module (ECM) via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

OBDII Code P1124 Infiniti - Throttle Control Motor Relay Circuit Short - AutoCodes.com — P1124 Infiniti Code - Throttle Control Motor Relay Circuit Short

What does this mean?

What are the Possible Causes of the DTC P1124 Infiniti?

Faulty Throttle Control Motor relay
Throttle Control Motor relay harness is open or shorted
Throttle Control Motor relay circuit poor electrical connection

How to Fix the DTC P1124 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 P1124 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.

Need more information about the P1124 Infiniti code?

Need more information on how to fix the P1124 Infiniti code? Get Access to Factory Service Manuals

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Information for Specific Infiniti Models

P1124 2003 Infiniti G35 — Throttle Control Motor Relay Circuit Short
P1124 2004 Infiniti G35 — Throttle Control Motor Relay Circuit Short
P1124 2005 Infiniti G35 — Throttle Control Motor Relay Circuit Short

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.