Transmission Fluid Temperature Sensor A Circuit Intermittent

What it means

The computer has seen the transmission fluid temperature signal jump or drop out suddenly and then return. Real fluid temperature changes slowly, so fast jumps usually point to a poor contact or a partly broken wire rather than a true temperature change.

Related codes: P0710P0711P0712P0713P0700

Symptoms4

• Check engine light coming on and off.
• Fluid temperature on a scan tool jumping between distant values.
• Occasional harsh or delayed shifts.
• Torque converter clutch lockup changing from time to time.

Possible causes5

• Poor contact or corrosion at the transmission connector pins.
• Fluid entering the connector past a damaged seal.
• A partly broken wire affected by vibration or heat.
• Heat-cracked internal harness.
• An intermittent contact inside the sensor itself.

How to diagnose5

1. Watch and record fluid temperature on a scan tool while driving to catch the jumps.
2. Gently move the transmission connector and wiring while watching the reading.
3. Inspect inside the connector for fluid, corrosion or loose pins.
4. Measure sensor resistance while moving the harness and note any sudden change.
5. Confirm the ground shared with other transmission sensors is good.

How to fix5

1. Clean the connector and tighten the pins, or replace it.
2. Replace the connector seal if fluid is getting in.
3. Repair the partly broken wire and secure the harness.
4. Replace the sensor or internal harness if the dropout is inside them.
5. Clear the codes and confirm the reading stays steady on a road test.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low when cleaning a connector or replacing a seal fixes it, and higher when an internal sensor or internal harness is replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions