Transmission Fluid Pressure Switch A Circuit Low (Ford)
What does P1713 mean?
The P1713 code means the vehicle's onboard diagnostic system has detected: Transmission Fluid Pressure Switch A Circuit Low (Ford). This is a moderate severity code.
Common Symptoms
- Check Engine Light on
- Harsh or delayed shifts
- Transmission slipping in certain gears
- Incorrect shift points
- Transmission warning light on
Probable Causes (Ranked by Likelihood)
- Failed pressure switch A in valve body Very High
- Low transmission fluid level High
- Contaminated transmission fluid affecting switch Moderate
- Internal wiring harness connector fault Low
Step-by-Step Diagnostic Procedure
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Check transmission fluid level and condition. Low or contaminated fluid can affect pressure switch readings.
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Monitor pressure switch A status on a scan tool during shifting. Compare on/off states to expected shift logic.
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Drop the transmission pan and inspect the pressure switch connector in the valve body.
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Test the pressure switch with compressed air and a multimeter to verify it opens and closes properly.
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If the switch tests bad, replace it and the internal harness connector seal.
Frequently Asked Questions
What does the pressure switch do?
Transmission pressure switches tell the PCM which clutch packs are applied by detecting hydraulic pressure. This allows the PCM to verify the transmission is in the correct gear.
Can I access the pressure switch without removing the transmission?
Yes. Pressure switches are in the valve body, which is accessible by removing the transmission pan. No transmission removal is needed.
Should I replace all pressure switches at once?
It is recommended if the transmission has high mileage. Pressure switches are inexpensive and replacing them all during a pan service prevents repeat failures.