Transmission Range Sensor Out of Self-Test Range (Ford)
What does P1705 mean?
The P1705 code means the vehicle's onboard diagnostic system has detected: Transmission Range Sensor Out of Self-Test Range (Ford). This is a moderate severity code.
Common Symptoms
- Check Engine Light on
- Transmission not shifting properly
- Vehicle will not come out of Park
- Gear position display incorrect
- Transmission defaulting to one gear
Probable Causes (Ranked by Likelihood)
- Faulty transmission range sensor Very High
- Shift cable stretched or out of adjustment High
- Corroded electrical connector at sensor Moderate
- Internal sensor circuit board failure Low
Step-by-Step Diagnostic Procedure
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Verify the shifter moves freely and fully engages each detent position.
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With a scan tool, read the TRS position while slowly moving through Park, Reverse, Neutral, Drive, and Low.
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Inspect the sensor connector on the transmission for fluid intrusion or corrosion.
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Adjust the shift cable if the sensor readings are offset from expected values.
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If adjustment does not help, replace the transmission range sensor.
Frequently Asked Questions
Can I test the TRS with a multimeter?
Yes. You can measure resistance or voltage at the sensor connector pins while moving the shifter. Compare readings to Ford's specification chart for each position.
Does this code set during the self-test only?
P1705 typically sets during the PCM self-test sequence (key-on engine-off or key-on engine-running test). It indicates the TRS was not in an expected range during testing.
Is the TRS sensor expensive?
The sensor itself is typically $40-$100. Labor varies depending on whether the sensor is externally or internally mounted on the transmission.