P0713 — Transmission Fluid Temperature Sensor A Circuit High Input

How much does it cost to fix P0713?

Replace a shift solenoid — $300–$800; Valve body repair or replacement — $700–$1,500; Transmission fluid service — $150–$350; Transmission rebuild or replacement — $2,500–$5,500. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

How do I diagnose P0713 myself?

Start with a scan: confirm P0713, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the transmission fluid temperature sensor a, and verify the suspect component against live data before buying parts.

Will P0713 clear itself?

Sometimes P0713 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

Is it safe to drive with P0713?

Drive only if the transmission still shifts predictably, and avoid highway speeds. Driving with slipping or limp mode accelerates internal wear — every kilometre can add to the final repair bill.

What are the symptoms of P0713?

Drivers most often notice: harsh or delayed shifting, shuddering at highway speed, slipping between gears, Check Engine or transmission warning light on.

When your check engine light comes on and a scanner pulls code P0713, you're looking at a problem with the automatic transmission's fluid temperature sensing circuit. The powertrain control module logs this code specifically when it detects voltage on the transmission fluid temperature sensor A circuit that sits above the normal operating range — usually close to full battery voltage. "Circuit high" is the module's way of saying the signal it's receiving doesn't match what a properly functioning sensor should produce.

The transmission fluid temperature sensor plays a critical role in transmission operation. The control module relies on this reading to determine fluid viscosity, schedule shift timing, and protect the transmission from heat damage. When the sensor circuit reads artificially high voltage, the module loses accurate temperature data and can't make proper adjustments. This fault typically stems from one of three situations: the sensor itself has failed and is pulling the signal high, a wire in the circuit has shorted to a power source, or the ground return path for the sensor has opened up. The control module won't set P0713 based on a single anomalous reading — it confirms the fault across multiple test cycles under specific conditions before illuminating the warning light and storing the code.

The freeze frame data captured alongside P0713 is valuable diagnostic information. It records engine load, RPM, coolant temperature, and vehicle speed at the exact moment the fault was detected. When you test the vehicle, replicating those conditions gives you the best chance of reproducing the failure and verifying your repair.

Symptoms

• Erratic or harsh shift quality; the transmission may also hesitate before engaging a gear
• Noticeable shuddering or vibration, particularly at highway speeds
• Unpredictable gear changes with slipping sensation between ratios
• Illumination of the Check Engine light or a dedicated transmission warning indicator
• Complete loss of forward or reverse motion in severe cases
• Transmission locked into a single gear, often third or failsafe, commonly called limp mode

Causes

• Faulty transmission fluid temperature sensor A causing the signal voltage to read high
• Signal wire in the sensor circuit shorted directly to battery positive voltage
• Open or broken ground return circuit for the transmission fluid temperature sensor A
• Worn or damaged valve body with contaminated channels or failed internal seals
• Malfunctioning shift solenoid or line pressure control solenoid
• Damaged wiring or corroded connectors within the valve body harness assembly
• Degraded or insufficient transmission fluid unable to maintain proper operating characteristics
• Faulty transmission input or output speed sensor sending confusing data to the control module
• Internal mechanical problems including worn clutch plates or torque converter issues

How to Diagnose P0713

1. Connect an OBD2 scanner and verify that P0713 is stored as an active or pending code. Save the freeze frame data immediately — this snapshot of engine conditions at the fault moment guides your entire diagnosis.
2. Scan for any additional trouble codes. Related transmission codes often point toward the actual root cause rather than just the symptom. Cross-reference any applicable technical service bulletins for your specific make and model, as many transmission-related codes have documented factory fixes or calibration updates.
3. Perform a thorough visual inspection of the transmission wiring harness and electrical connectors. Look for chafed insulation, broken wires, corrosion buildup, or connectors that aren't fully seated. Pay special attention to areas near heat sources or moving components.
4. With the transmission fluid temperature sensor disconnected, probe the signal wire at the harness side and measure voltage. If you still see battery-level voltage with the sensor unplugged, the harness has a short to power that must be repaired. If the reading drops to normal sensor reference voltage, the sensor itself is the culprit.
5. Inspect the transmission fluid level and condition. Pull the dipstick and examine the fluid — it should be red or pink and smell slightly sweet. Dark brown or black fluid with a burnt odor indicates overheating and internal wear, which may explain why the sensor circuit is behaving erratically.
6. Use a transmission-capable scanner to read manufacturer-specific codes and monitor live data. Check solenoid operation states, input and output shaft speeds, and apply pressure readings. This data reveals whether the transmission is functioning within specification or if a mechanical fault is present alongside the electrical issue.
7. After completing any repairs, clear the code and drive the vehicle through a complete drive cycle that includes the operating conditions captured in the freeze frame. Confirm that P0713 does not return before considering the diagnosis complete.

Repair Options and Costs

The appropriate repair depends entirely on what component caused P0713. Here are the typical fixes with their associated costs for parts and labor at independent repair shops in the United States:

• Transmission fluid drain and fill or complete service: $150–$350
• Shift solenoid or pressure control solenoid replacement: $300–$800
• Valve body repair or full replacement: $700–$1,500
• Transmission rebuild or complete replacement: $2,500–$5,500

How Much Does Fixing P0713 Cost?

Total repair cost for P0713 spans a wide range depending on which part has failed. Based on typical scenarios for parts and labor at independent shops in the United States, solenoid replacement runs $300–$800, valve body work costs $700–$1,500, a transmission fluid service is $150–$350, and a full transmission rebuild or replacement runs $2,500–$5,500. Most vehicles with this code fall somewhere between $150 and $5,500 all-in. The key to keeping costs reasonable is accurate diagnosis upfront — don't replace a transmission when the problem is simply a faulty sensor or bad wiring.

Driving Safety Verdict

Severity Level: Caution

If the transmission still shifts predictably and no warning lights are flashing, short trips to a repair facility may be acceptable. However, avoid highway driving and any situation requiring brisk acceleration. Once you notice slipping between gears, hesitation, or the transmission has dropped into limp mode, the vehicle should be transported rather than driven. Continued operation with these symptoms accelerates internal wear on clutches, bands, and the torque converter, which directly increases your final repair