Transmission Over Temperature Condition
P0218 — Transmission Over Temperature Condition
System: Powertrain | Type: Generic (OBD-II Standard) | Make: Generic
P0218 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.
Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.
Because P0218 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.
The P0218 fault code is set when the Engine Control Module (ECM) or Transmission Control Module (TCM) detects that the transmission is operating at a higher temperature than normal, indicating an overheating condition. Overheating of the transmission can lead to significant damage to transmission components, potentially causing transmission failure. Causes of transmission overheating can include low transmission fluid, old or degraded transmission fluid, malfunctioning transmission cooling systems, excessive towing or hauling loads, or internal transmission mechanical problems. The ECM or TCM ...
Detailed possible causes for P0218 are available to TaT members.
Unlock with Free TrialStep-by-step diagnostic guidance for P0218 is available to TaT members. Our Diagnostic Assistant provides professional-level troubleshooting procedures written by experienced technicians.
Unlock with Free Trial| Code | P0218 |
| System | Powertrain |
| Type | Generic (OBD-II Standard) |
| Make | Generic |
| Causes | Available |
| Diag. Assistant | Available |
| Video | — |
Get complete diagnostic info, causes, and repair guidance.
Start Free 7-Day Trial Member LoginSearch all 8,602 fault codes with complete diagnostic details, possible causes, and repair guidance.
Start Your Free 7-Day Trial Member Login© 2026 The Automotive Technician (TaT) — www.tat.net.au