P0700

Medium Severity

Transmission Control System

Transmission System

P0700 — Instant Answer

Transmission Control System

Severity: MEDIUM SEVERITY

Meaning: The TCM (Transmission Control Module) has detected a fault and sent a message to the ECM. This is a general indicator that transmission-specific codes are stored.

Safe to drive? Usually yes with caution, but confirm root cause before long trips.

Estimated repair cost: $50 - $1,000

Most common causes:

  • 1. Transmission solenoid failure (35-45% of cases)
  • 2. Low transmission fluid (35-45% of cases)
  • 3. Wiring issue to transmission (10-25% of cases)
  • 4. TCM failure (10-25% of cases)

Symptoms

  • ⚠️Check engine light
  • ⚠️Transmission warning light
  • ⚠️Harsh or delayed shifting
  • ⚠️Limp mode

Related Symptoms

Common Causes

Transmission solenoid failurelikely
Low transmission fluidlikely
Wiring issue to transmissionpossible
TCM failurepossible

How to Diagnose P0700

  1. 1Check transmission fluid level and condition
  2. 2Scan for transmission-specific codes (P07xx)
  3. 3Check wiring to transmission
  4. 4Service transmission if fluid is dark

OEM Procedures for P0700

P0700 affects the Transmission. Found 1,512 OEM service manual procedures.

Transmission

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 036 Installing replacement transmission (GS6-37BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 037 Installing Replacement Transmission (GS6-53BZ/DZ)

Transmission
No link

00 Complete Transmission - 23 00 037 Installing Replacement Transmission (GS6-53BZ/DZ)

Transmission
No link

Showing 8 of 1,512 procedures

OEM Diagnostic Flowchart

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Related Resources

Repair guides, symptom pages, and wiring diagrams related to P0700.

Frequently Asked Questions

Is P0700 always a transmission problem?
P0700 itself just means the TCM flagged an issue. Scan specifically for transmission codes (P07xx) to identify the actual problem.
Can low fluid cause P0700?
Yes — low or degraded transmission fluid is one of the most common causes. Check fluid level and condition first.

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Author & Review

Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.

This guide was drafted with AI assistance and reviewed for accuracy by a human editor.

Last updated: 2026-05-07

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