Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Ford Explorer ChassisFACTORY OEM SERVICE PROCEDURE
Automatic Transmission DTCS: 4R70W
AUTOMATIC TRANSMISSION DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION (4R70W)
| DTC | Diagnostic Test | Description | Condition | Transmission Symptom |
|---|---|---|---|---|
| P0705 | C | Digital TR Sensor Circuit Short To Ground Or Open | Digital TR Sensor Circuits, Indicating An Invalid Pattern In TR_D. Condition Caused By A Short To Ground Or An Open In TR4, TR3A, TR2 and/or TR1 circuits, DTC P0705 Cannot Be Set By An Incorrectly Adjusted Digital TR Sensor | Increase in EPC Pressure (Harsh Shifts); Defaults To OD Or D For All Gear Positions; In OD Position, Transmission Is Stuck In D Or Manual 2nd |
| P0707 | C | Digital TR Sensor Circuit Below Minimum Voltage | TR Sensor, Circuit Or PCM Shorted Or Grounded | Increase In EPC Pressure |
| P0708 | C | Digital TR Sensor Circuit TR3A Open Circuit | Digital TR Sensor Circuit TR3A Reading 2.6- 5.0V (Open Circuit). This DTC Cannot Be Set By An Incorrectly Adjusted Digital TR Sensor | Increase In EPC Pressure, Defaults To OD Or D For All Gear Ranges |
| P0712 | B | TFT Indicates 315°F (157°C) - Short To Ground | Voltage Drop Across TFT Sensor Exceeds Scale Set For Temperature Of 315°F (157°C) | TCC & Stabilized Shift Schedule May Be Enabled Sooner After Cold Start. Harsh Or Soft Shifts |
| P0713 | B | TFT Indicates -40°F (-40°C) - Open Circuit | Voltage Drop Across TFT Sensor Exceeds Scale Set For Temperature Of -40°F (-40°C) | TCC & Stabilized Shift Schedule May Be Enabled Sooner After Cold Start. Harsh Or Soft Shifts |
| P0720 | E | Insufficient Input From Output Shaft Speed Sensor | PCM Has Detected No OSS Signal | Abnormal Shift Schedule, No TCC Engagement |
| P0721 | E | Noisy Signal From OSS Sensor | PCM Has Detected An Erratic OSS Signal | Abnormal Shift Schedule, No TCC Engagement |
| P0722 | E | Intermittent Signal From OSS Sensor | PCM Has Detected An Erratic Or No OSS Signal | Abnormal Shift Schedule, No TCC Engagement |
| P0740 | A | TCC Electrical Circuit Failure | TCC Circuit Fails To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failed During On-Board Diagnostic | Short Circuit: Engine Stalls In 2nd (OD, 2 Range) At Low Idle Speeds With Brake Applied. Open Circuit: Torque Converter Clutch Never Engages. Flashing TCIL |
| P0741 | A | The PCM Picked Up An Excessive Amount Of TCC Slippage During Normal Vehicle Operation | N/A | TCC Slippage/Erratic Or No Torque Converter Clutch Operation. Flashing TCIL |
| P0743 | A | TCC Solenoid Circuit Failure During On-Board Diagnostic | TCC Solenoid Circuit Fails To Provide Voltage Drop Across Solenoid, Circuit Open Or Shorted Or PCM Drive Failure During On-Board Diagnostic | If Short Circuit, Engine Stalls At Low Idle; If Open Circuit, TCC Does Not Engage |
| P0750 | A | SSA Solenoid Circuit Failure | SSA Circuit Failed To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failure During On-Board Diagnostic | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position |
| P0751 | A | SSA Solenoid Functional Failure | Mechanical Or Hydraulic Failure Of The Shift Solenoid | Incorrect Gear Selection Depending On Failure Mode & Manual Lever Position |
| P0753 | A | SSA Solenoid Circuit Failure | SSA Circuit Failed To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failure During On-Board Diagnostic | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position, Flashing TCIL |
| P0755 | A | SSB Solenoid Circuit Failure | SSB Circuit Failed To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failure During On-Board Diagnostic | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position |
| P0756 | A | SSB Solenoid Functional Failure | Mechanical Or Hydraulic Failure Of The Shift Solenoid | Incorrect Gear Selection Depending On Failure Mode & Manual Lever Position |
| P0758 | A | SSB Solenoid Circuit Failure | SSB Circuit Failed To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failure During On-Board Diagnostic | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position, Flashing TCIL |
| P0781 | A | 1-2 Shift Error | Incorrect Gear Ratio While Commanding 1st Gear | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position. Shift Errors May Also Be Due To Other Internal Transaxle Concerns (e.g., Stuck Valves, Damaged Friction Material) |
| P0782 | A | 2-3 Shift Error | Incorrect Gear Ratio While Commanding 2nd Gear | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position. Shift Errors May Also Be Due To Other Internal Transaxle Concerns (e.g., Stuck Valves, Damaged Friction Material) |
| P0783 | A | 3-4 Shift Error | Incorrect Gear Ratio While Commanding 3rd Gear | Incorrect Gear Selection Depending On Condition Mode & Manual Lever Position. Shift Errors May Also Be Due To Other Internal Transaxle Concerns (e.g., Stuck Valves, Damaged Friction Material) |
| P1702 | C | Digital TR Sensor Signal Intermittent | Refer To DTCs P0705 & P0708 | Refer To DTCs P0705 & P0708 |
| P1704 | C | Digital TR Sensor Malfunction, Or Not In "P" Or "N" Position During KOEO/KOER | Digital TR Sensor Or Shift Cable Misadjusted Or Digital TR Circuit Failure | Incorrect Commanded PC Pressure, TR Sensor Reading Incorrect Gear Position |
| P1705 Or P1709 | C | Digital TR Sensor Malfunction, Or Not In "P" Or "N" Position During KOEO/KOER | KOEO/KOER Not Run In PARK Or NEUTRAL | DTC Is Set, Re-Run On-Board Diagnostics With Manual Lever In "P" Or "N" Position |
| P1710 | B | TFT Sensor In Range Malfunction | PCM Detected TFT Not Changing | Firm Shift, TCIL Flashing, Increase In EPC Pressure |
| P1711 | B | TFT Sensor Not At Operating Temperature (25-240°F) During On-Board Diagnostics | Warm Or Cool Vehicle To Normal Operating Temperature | Vehicle Cold Or Overheated |
| P1713 | B | TFT Continually Reading Cold | TFT Sensor In Range Low Failure | Firm shift feel. Substitute ECT for TFT |
| P1714 | F | SSA Solenoid Failure | Mechanical Failure Of The Solenoid Detected | Incorrect Gear Selection Depending On Condition, Mode & Manual Lever Position |
| P1715 | F | SSB Solenoid Failure | Mechanical Failure Of The Solenoid Detected | Incorrect Gear Selection Depending On Condition, Mode & Manual Lever Position |
| P1718 | B | TFT Continually Reading Hot | TFT Sensor In Range High Failure | Firm Shift Feel. Substitute ECT For TFT |
| P1740 | F | TCC Failure | Mechanical Failure Of The Solenoid Detected | No TCC Engagement |
| P1741 | A | Excessive TCC Engagement Error | Excessive Variations In Slip (Engine Speed Surge) Across The Torque Converter Clutch | Engine RPM Oscillation Is Present In 3rd Gear |
| P1742 | A | TCC Solenoid Failed ON | TCC Solenoid Has Failed On By Electric, Mechanical Or Hydraulic Concern | Harsh Shifts |
| P1743 | A | TCC Solenoid Failed ON | TCC Solenoid Has Failed On By Electric, Mechanical Or Hydraulic Concern | Harsh Shifts |
| P1744 | A | TCC | The PCM Picked Up An Excessive Amount Of TCC Slippage During Normal Vehicle Operation | TCC Slippage/Erratic Or No TCC Operation |
| P1746 | D | Open PCM Output Driver | Voltage Through EPC Solenoid Is Checked & Compared To A Voltage Through Solenoid After A Time Delay, Any Errors Are Recorded | Open Circuit - Causes Maximum EPC Pressure, Harsh Engagements & Shifts |
| P1747 | D | EPC Solenoid Circuit Failure, Shorted Circuit Or Output Driver | Voltage Through EPC Solenoid Is Checked & Compared To A Voltage Through Solenoid After A Time Delay, Any Errors Are Recorded | Short Circuit - Causes Failsafe EPC Pressure (Maximum Capacity), Harsh Engagements & Shifts |
| P1760 | D | EPC Solenoid Circuit Failure, Shorted Circuit Or Output Driver | PCM Detected A Loss Of EPC During Operation | Unexpected Reduction In Engine Torque |
| P1767 | A | TCC solenoid circuit failure during OBD Test | TCC Solenoid Circuit Fails To Provide Voltage Drop Across Solenoid. Circuit Open Or Shorted Or PCM Driver Failure During OBD Test | Short Circuit: Engine Stalls In 2nd (O/D, 2 Range) At Low Idle Speeds With Brake Applied. Open Circuit: TCC Never Engages |
| P1783 | B | Transmission Overheating Condition, Fluid Temperature Exceeded - 260°F (127°C) | Increase In EPC Pressure During Overtemp. Only | Increase In EPC Pressure |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.