P0713 on 2014-2015 Land Rover Range Rover Evoque: Transmission Sensor Circuit Fault Guide

What's Unique About the 2014-2015 Land Rover RANGE ROVER EVOQUE

For the 2014-2015 Range Rover Evoque, this code is specifically called out in Land Rover's Technical Service Bulletin #LTB00740NAS2. The bulletin states that P0713 may be caused by a faulty crimp on the transmission's internal wiring harness. This is not just a Land Rover issue; it's a known manufacturing defect from the transmission supplier, ZF, for their 9HP48 transmission. This defect led to a recall of over 500,000 Fiat-Chrysler vehicles with the same transmission for the same wiring harness crimp failure. This makes an internal wiring failure a much more likely cause on this specific vehicle compared to others where the sensor itself might be the primary culprit.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light or Transmission Warning Light is on.
• "Gearbox Fault" message displayed in the instrument cluster.
• Harsh, jerky, or delayed gear shifts.
• Vehicle enters a limited performance "limp mode", often stuck in one gear.
• Transmission may slip or refuse to shift gears properly.
• Irregular torque converter clutch operation.
• Reduced fuel economy.

Most Likely Causes

1. Faulty Crimp on Internal Transmission Wiring Harness 🔴 High Probability This is a known manufacturing defect from transmission supplier ZF, documented by Land Rover in TSB #LTB00740NAS2 for this specific vehicle and year range. The same issue prompted a massive recall in other brands using this transmission.
   How to confirm: A technician must drop the transmission pan and visually inspect the internal harness. Continuity tests on the wiring can confirm an open circuit. A scan tool may show a nonsensical temperature reading like -40°F or over 300°F.
   Typical fix: Replacing the entire internal transmission wiring harness (also called the solenoid valve electrical harness) as per the procedure in TSB LTB00740NAS2.
   Est. part cost: $100-$300 for the harness
2. Failed Transmission Fluid Temperature (TFT) Sensor 🟡 Medium Probability The sensor is integrated into the internal wiring harness that is known to be faulty. The failure is rarely the sensor in isolation but rather the harness assembly it is part of.
   How to confirm: After confirming the external wiring is intact, the sensor itself can be tested. A technician can measure its resistance and compare it to the manufacturer's specifications at different temperatures. However, since the sensor is part of the harness, a harness fault is more likely.
   Typical fix: Replace the TFT sensor. As it is integrated into the internal harness, the entire harness assembly is replaced.
   Est. part cost: $50-$150 for a standalone sensor, or included with the harness
3. Damaged External Wiring or Connectors ⚪ Low Probability
   How to confirm: Visually inspect the wiring harness leading to the transmission for any signs of damage, corrosion, or loose connections. Test for continuity and voltage at the TCM connector.
   Typical fix: Repair the damaged section of the wire or replace the faulty connector.
   Est. part cost: $20-$100

Rare But Worth Checking

• Faulty Transmission Control Module (TCM): This is a very rare cause. The TCM should only be considered after all wiring, connectors, and the sensor/harness assembly have been thoroughly tested and confirmed to be working correctly.

Diagnosis Steps

1. Scan the Transmission Control Module (TCM) for all stored trouble codes. Note if P0713 is accompanied by any other codes listed in TSB LTB00740NAS2.
2. Use a scan tool to monitor the live data for the transmission fluid temperature. An unchanging, extremely high (e.g., 300°F+), or extremely low (e.g., -40°F) reading points directly to an electrical circuit fault.
3. Check the transmission fluid level and condition. While unlikely to cause a 'circuit high' code, low or burnt fluid can indicate other transmission problems.
4. Inspect the external wiring harness and the main connector at the transmission case for any visible damage, corrosion, or loose pins.
5. If external wiring is intact, the next step is to drain the transmission fluid and remove the oil pan to access the internal components.
6. Carefully inspect the internal wiring harness (solenoid valve electrical harness) for the faulty crimp described in TSB LTB00740NAS2. Check all wires for signs of breaks, chafing, or heat damage.
7. Test the continuity of the TFT sensor circuit from the sensor connector back to the main transmission connector.
8. If the wiring is confirmed to be good, test the resistance of the TFT sensor itself and compare it to the manufacturer's specifications, though this is less likely to be the root cause.
9. Only consider the TCM as the potential cause if all other components have been ruled out.

Parts You'll Likely Need

• Transmission Internal Wiring Harness (OEM #LR086171 (supersedes LR064790)) — This is the most likely failed part according to Land Rover's Technical Service Bulletin (LTB00740NAS2). The original part LR064790 was superseded by LR086171. The temperature sensor is integrated into this harness.
  Trusted brands: Land Rover (Genuine), ZF
  OEM price range: $150-$250
  Aftermarket price range: $100-$180
• Transmission Fluid (OEM #LR023288 (ZF Lifeguard 8/9)) — Required to refill the transmission after dropping the pan to replace the internal harness. The ZF 9HP transmission requires a specific fluid.
  Trusted brands: ZF Lifeguard 8/9, Liqui Moly Top Tec 1800, Ravenol ATF 9HP
  OEM price range: $30-$50 per liter
  Aftermarket price range: $20-$35 per liter
• Transmission Oil Pan with Gasket and Filter (OEM #LR065238) — The pan has an integrated filter and the gasket must be replaced anytime the pan is removed. It is best practice to replace the pan/filter assembly during this service.
  Trusted brands: Land Rover (Genuine), ZF, Mahle, Hengst
  OEM price range: $150-$250
  Aftermarket price range: $100-$180

Related Codes That Often Appear With This One

• P0600-04 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0710-27 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0712-11 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0975-19 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0978-19 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0981-19 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.
• P0984-19 — Caused by the same faulty crimp on the internal transmission wiring harness, as per TSB LTB00740NAS2.

Technical Service Bulletins (TSBs) & Recalls

• LTB00740NAS2: States that a faulty crimp on the transmission internal wiring harness may cause DTC P0713-13, among others. The prescribed fix is to replace the harness.

Platform-Specific Known Issues

• A known manufacturing issue with a faulty crimp on the transmission internal wiring harness is the primary cause for this code on 2014-2015 models, as documented in TSB LTB00740NAS2.
• This issue is not unique to Land Rover; it is a well-documented defect in the ZF 9HP48 transmission that has affected multiple manufacturers, including Jeep and Chrysler, who issued recalls for the same problem.