P0700 (generic)
Transmission Control System Malfunction
System: Powertrain · Transmission
Severity: severe · Inspection: often fails
Description
Generic indicator that the TCM has set a transmission DTC. Pull the TCM's specific code to diagnose.
Diagnostic snapshot P0700
- Difficulty
- 6/10 — Intermediate diagnostics
- Est. repair cost
- $120 – $450 (parts + typical shop labor)
Diagnostic workflow
- Confirm P0700 with a live scan — note pending vs stored and freeze frame data.
- Inspect wiring/connectors and related sensors before replacing modules.
- Clear codes and road-test; re-scan after two drive cycles if the monitor must set.
Topics
- OBD-II and scan tools (guide)
- Powertrain DTCs (P-prefix) (system)
Related symptoms
None linked yet.
Common fixes (curated)
None linked yet.
Related articles
- Transmission Stuck in Limp Mode 2016 Toyota Corolla
- 2016 Toyota Avalon TCM Failure Symptoms & Diagnosis
- Symptoms of a Failing Transmission Control Module 2020 Toyota Avalon
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- 2016 Toyota Rav4 TCM Failure Symptoms: Erratic Shifting & Limp Mode
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- Transmission Control Module (TCM) Failure Symptoms 2017 Toyota Yaris Ia
- Symptoms of a Failing Transmission Control Module 2020 Toyota Fchv-Adv
- 2018 Toyota Mirai Transmission Stuck in Limp Mode Fix
- 2019 Toyota C-Hr Transmission Stuck in Limp Mode Fix
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- Transmission Warning Light Illuminated on Dash 1997 Ford Expedition
Diagnostic bundle (JSON)
Machine-readable graph: related codes, symptoms, fixes, topics, articles, and curated sources rows. Append &external=1 for optional YouTube / Google CSE hits when API keys are configured (see web/.env.example).