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P0923

P0923: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

Fix Cost

$500 - $2000

Parts & Labor

Difficulty

4/5

Hard

2-4 hours

DIY Possible?

❌ No

Pro recommended

📖 What Does P0923 Mean?

The Transmission Control Module (TCM) has detected an internal error, which may be caused by a faulty TCM, wiring issue, or other internal transmission component failure.

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Symptoms

• Transmission slips
• hesitation
• or refuses to engage gears
• unusual noises
• or transmission warning light on the dashboard

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Common Causes

• Faulty TCM
• wiring issue
• internal transmission component failure
• transmission fluid leak
• or low transmission fluid level

Fix Guide

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Possible Solutions

1. Check transmission fluid level and condition; 2. Scan for any other trouble codes; 3. Inspect wiring and connectors for damage or corrosion; 4. Replace faulty TCM or internal transmission component; 5. Bleed transmission system if necessary

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❓ Common Questions About P0923

Can I drive with code P0923?

No, it is not recommended. Seeing code P0923 indicates a serious issue that could damage your engine or transmission if ignored. You should stop driving and have it inspected immediately.

How much does it cost to fix P0923?

The estimated repair cost for code P0923 is between $500 and $2000. This includes parts and labor for most makes and models.

Is this code easy to fix myself?

This repair is considered difficult. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.