Pinpoint Test A : DTC P0218, P1783
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
The TFT sensor is a temperature dependent resistor that is in contact with transmission fluid in the transmission sump area. The PCM/ TCM monitors the voltage drop across the TFT sensor, which changes as transmission fluid temperature varies. If the PCM/ TCM detects an over temperature condition, it will set a DTC, and may limit engine torque to prevent further overheating.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition PCM P0218:00 Transmission Fluid Temperature Sensor "A" Over Temperature Condition: No Sub Type Information This DTC indicates the PCM detected a transmission fluid over temperature condition. This DTC will limit powertrain torque to prevent further overheating. PCM P1783:00 Transmission Overtemperature Condition: No Sub Type Information This DTC indicates the transmission fluid temperature was greater than 275°F (135°C) for more than 5 seconds. TCM P1783:00 Transmission Overtemperature Condition: No Sub Type Information This DTC indicates the transmission fluid temperature was greater than 275°F (135°C) for more than 5 seconds. Possible Sources
- TFT sensor circuit fault
- Transmission fluid heater coolant control valve
- Transmission overheating condition
- A1 CHECK FOR TFT (TRANSMISSION FLUID TEMPERATURE) SENSOR CIRCUIT DIAGNOSTIC TROUBLE CODES (DTCS)
- On vehicles equipped with the 2.7L EcoBoost, 3.3L Duratec - V6, 3.5L EcoBoost Base and 5.0L 32V TiVCT engines, carry out the KOEO and KOER PCM self-tests.
- On vehicles equipped with the 3.0L Diesel and 3.5L EcoBoost High Output engines, carry out the TCM self-test.
Are any TFT sensor circuit diagnostic trouble codes (DTCs) present?
Yes RESOLVE all TFT sensor circuit diagnostic trouble codes (DTCs) first. REFER to: DTC Chart and Pinpoint Tests - 3.3L Duratec-V6 . REFER to: DTC Chart and Pinpoint Tests - 2.7L EcoBoost (238kW/324PS) . REFER to: DTC Chart and Pinpoint Tests - 3.0L Power Stroke Diesel . REFER to: DTC Chart and Pinpoint Tests - 3.5L EcoBoost (272kW/370PS) . REFER to: DTC Chart and Pinpoint Tests - Raptor . REFER to: DTC Chart and Pinpoint Tests - 5.0L 32V Ti-VCT . No GO to A2 - A2 CHECK FOR TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE DIAGNOSTIC TROUBLE CODES (DTCS)
- On all vehicles, carry out the KOEO and KOER PCM self-tests.
Are diagnostic trouble codes (DTCs) P2681 and/or P2683 present?
Yes RESOLVE those diagnostic trouble codes (DTCs) first. GO to Pinpoint Test B No To diagnose an overheating concern, GO to Pinpoint Test C