Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P1713 — TFT Sensor In Range Failure Low Value

P1713 — TFT Sensor In Range Failure Low Value

Detailed page for trouble code P1713.

34,510codes
59brands
11,925generic
22,585specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P1713

MERCURY P — Powertrain

TFT Sensor In Range Failure Low Value

Brand: MERCURY
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Shorted TFT sensor signal to ground
  • Open or intermittent wiring/connectors to the TFT sensor
  • Corroded/poor connector or damaged terminal
  • Faulty TFT sensor (thermistor)
  • PCM input circuit fault or poor PCM ground
  • Very low or no transmission fluid (rare)

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Stored P1713 code (TFT sensor in-range failure low)
  • Transmission may shift improperly or enter limp mode depending on PCM strategy
  • Shift timing/lockup torque converter behavior altered
  • Scan tool shows abnormally low or frozen TFT reading

What to check

  • Retrieve freeze frame and all stored codes; note conditions (engine temp, vehicle speed)
  • Capture live data for TFT, engine coolant temp and ambient temp with a scan tool
  • Visually inspect TFT sensor connector and wiring for damage, corrosion, or pin push-out
  • Backprobe TFT sensor connector and verify reference voltage/ground where applicable
  • Wiggle wiring harness while monitoring live data for intermittent changes
  • Check PCM grounds and related fuses

Signal parameters

  • Typical sensor interface: low-voltage signal to PCM (0–5 V signal span depending on manufacturer)
  • At cold ambient temps the TFT reading should be higher voltage/lower resistance than a short-to-ground (a near 0 V signal indicates low)
  • Sensor is commonly a thermistor: resistance changes with temperature (NTC decreases resistance as temp rises)
  • Expected operating range (vehicle dependent): roughly tens of °C to >100 °C during normal operation; signal should move smoothly as temperature changes

Diagnostic algorithm

  1. Verify DTC and freeze-frame data with a scan tool; record live TFT and related temps
  2. Perform a visual inspection of sensor, connector and wiring for damage, corrosion or rodent damage
  3. Backprobe the TFT connector and with key ON (engine off) measure signal voltage to PCM; note if voltage is near 0 V (low)
  4. Check reference voltage and ground circuits for the sensor (where applicable) and verify continuity to PCM; repair any shorts to ground
  5. If wiring and connectors are good, measure sensor resistance vs ambient temperature and compare to specification (or substitute known-good sensor)
  6. If sensor shows correct resistance/voltage, check PCM input for damage or intermittent; inspect PCM connector and grounds
  7. Replace TFT sensor and/or repair wiring as required, clear codes and perform road test to verify code does not return
  8. If code persists after sensor and wiring are confirmed good, consider PCM diagnosis or replacement per manufacturer procedures

Likely causes

  • Damaged/shorted sensor wiring or connector corrosion
  • Failed TFT sensor
  • Poor ground or PCM connector issue

Fault status

⚠️ Status
PCM detected TFT circuit reporting a value below the valid range (low signal/temperature). Possible short to ground, open/failed sensor or wiring/connectivity issue.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P0117 P0118 P0717 P0700
296

Browse 296 MERCURY manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MERCURY

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .