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P0794

P0794: Transmission Control System Malfunction

Fix Cost
$200 - $800
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Powertrain
System

📖 What Does P0794 Mean?

The transmission control system has malfunctioned, affecting gear shifting and operation. This code indicates a problem with the transmission's electronic control module, solenoids, or sensors.
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Symptoms

  • Difficulty shifting gears
  • slipping
  • hesitation
  • or hesitation between gears
  • unusual noises
  • or the transmission warning light on the dashboard.
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Common Causes

  • Faulty transmission solenoids
  • faulty transmission sensors
  • wiring issues
  • transmission control module failure
  • or software glitches.
Fix Guide
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Possible Solutions

1. Check for any trouble codes and clear them. 2. Inspect and clean the transmission solenoids and sensors. 3. Check the wiring and connectors for damage or corrosion. 4. Update the transmission control module software if necessary. 5. Replace faulty solenoids or sensors.

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Common Questions About P0794

Q

Can I drive with code P0794?

A

You can drive for a short time, but should address code P0794 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix P0794?

A

The estimated repair cost for code P0794 is between $200 and $800. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

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

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Complex codes like P0794 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with P0794

💡 Why These Codes Are Related:

  • Similar Issues: Same root cause or component failure
  • Related Problems: Often occur together due to system interactions
  • Sequential Codes: Progressive failure stages or multiple sensors
  • Same System: Components within the same automotive system