AutoCodes – Infiniti – P0600 Infiniti

P0600 Infiniti Code - A/T Control Serial Communication Link Malfunction

Quick Answer

These circuit lines are used to control the smooth shifting up and down of A/T during the and acceleration/deceleration. Common causes include The circuit between ECM and A/T control unit is open or shorted, Faulty Engine control Module (ECM), Engine control Module(ECM) harness is open or shorted. 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: P0600 Infiniti indicates A/T Control Serial Communication Link Malfunction.
Common causes: Common causes include The circuit between ECM and A/T control unit is open or shorted, Faulty Engine control Module (ECM), Engine control Module(ECM) harness is open or shorted.
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 12,730

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 Oct 02, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0600 Infiniti Description

These circuit lines are used to control the smooth shifting up and down of A/T during the and acceleration/deceleration. Voltage signal are exchanged between the Engine Control Module (ECM) and Automatic Transmission (A/T) control unit.

OBDII Code P0600 Infiniti - A/T Control Serial Communication Link Malfunction - AutoCodes.com — P0600 Infiniti Code - A/T Control Serial Communication Link Malfunction

What does this mean?

What are the Possible Causes of the DTC P0600 Infiniti?

The circuit between ECM and A/T control unit is open or shorted
Faulty Engine control Module (ECM)
Engine control Module(ECM) harness is open or shorted
Engine control Module (ECM) cicuit poor electricl connection
Faulty Automatic Transmission Module (TCM)
Low battery voltage
Automatic Transmission Module (TCM) harness is open or shorted
Automatic Transmission Module (TCM) cicuit poor electricl connection

How to Fix the DTC P0600 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 does this mean?

Code Tech Notes

For Infiniti vehicles, the problem is usually related to the automatic transmission (A/T) control unit. Either a bad connector o bad control unit itself.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0600 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.