C1711 on 2008-2012 Infiniti EX35: Rear Left TPMS Sensor Fault Causes and Fixes

What's Unique About the 2008-2012 Infiniti EX35

For this generation of Infiniti vehicles built on the Nissan FM platform, the TPMS is known to be sensitive to radio frequency (RF) interference. Infiniti issued a Technical Service Bulletin (ITB13039A, also referenced as NTB13-088a for Nissan) specifically warning that aftermarket devices, such as cheap or poor-quality cell phone chargers plugged into the 12V outlets, can disrupt the 315MHz sensor signals and cause a 'No Data' condition, leading to code C1711. This means that before replacing parts, it's crucial to rule out external electronic interference by unplugging all such devices.

Diagnostic Flowchart

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

Symptoms You May Notice

• TPMS warning light flashes for approximately one minute at startup, then stays on solid.
• Vehicle information display shows a dash or no reading for the rear left tire's pressure.
• "Check Tire Pressure" message may appear in the instrument cluster display.

Most Likely Causes

1. Dead TPMS Sensor Battery 🔴 High Probability The original sensors have a sealed, non-serviceable battery with a 5-10 year lifespan. Vehicles in the 2008-2012 range are now well beyond the expected end-of-life for the original factory sensors, making this the most common cause.
   How to confirm: Use a TPMS diagnostic tool (like an Autel or Schrader tool) at the rear left wheel. If the tool cannot activate the sensor or get a reading (ID, pressure, temperature, battery status), the sensor has failed.
   Typical fix: Replace the rear left TPMS sensor and its service kit (valve stem, nut, seals). The new sensor ID must be registered to the BCM using a TPMS relearn tool.
   Est. part cost: $40-$120
2. Radio Frequency (RF) Interference 🟡 Medium Probability As noted in TSB ITB13039A/NTB13-088a, the TPMS receiver is susceptible to disruption by signals from aftermarket electronics like low-quality phone chargers, dash cams, or power inverters plugged into the 12V outlets. These devices can emit RF noise that jams the 315MHz signal from the sensor.
   How to confirm: Unplug all aftermarket devices from the 12V power outlets. Clear the DTCs (if possible) and drive the vehicle for 10-15 minutes above 25 MPH to see if the code returns. If the light goes out and does not return, one of the devices was the cause.
   Typical fix: Remove or replace the interfering electronic device with a higher-quality, properly shielded one.
   Est. part cost: $0
3. Damaged TPMS Sensor ⚪ Low Probability Sensors can be physically damaged during tire mounting or dismounting if the technician is not careful or aware of the sensor's location. Road debris or severe potholes can also cause damage.
   How to confirm: Visual inspection of the sensor after dismounting the tire. The sensor may have visible cracks, be broken off the valve stem, or show other signs of physical damage.
   Typical fix: Replace the damaged TPMS sensor and perform the relearn procedure.
   Est. part cost: $40-$120

Rare But Worth Checking

• Faulty TPMS Receiver/Antenna: This is very rare. The receiver (sometimes called the TPMS antenna or control unit, part # 40740-1NC2A on related models) is a radio transceiver that collects signals from all four sensors. If it fails, you will typically see codes for all four wheels (C1708, C1709, C1710, C1711) simultaneously. A user on a MyG37 forum fixed this issue by replacing this module, which is located behind the glove compartment. This should only be considered after confirming all sensors are transmitting properly.
• Faulty Body Control Module (BCM): This is extremely rare and should only be considered after a new, known-good sensor has been installed and correctly registered but the code persists. A BCM failure would likely present with numerous other seemingly unrelated electrical issues throughout the vehicle.
• HVAC Blower Motor Interference: On related Nissan/Infiniti platforms like the 2018 370Z, a TSB (NTB19-062) was issued for an issue where the HVAC blower motor could cause RF interference, triggering TPMS codes C1708-C1711. While not specific to the EX35, it highlights the system's sensitivity. The diagnostic step involves running the HVAC on max cool during a road test to see if it triggers the fault.

Diagnosis Steps

1. Verify the symptom: Confirm the TPMS light flashes for about a minute on startup before staying solid. This indicates a system fault, not low pressure.
2. Check for RF Interference: Unplug ALL aftermarket accessories from 12V power sockets (phone chargers, dash cams, GPS, etc.).
3. Clear Codes and Drive: If you have a scanner, clear the DTCs. Drive the vehicle above 25 MPH for several minutes. If the light stays off, the interference was the issue. If it returns, proceed to the next step.
4. Test the Sensor: Use a TPMS activation tool (e.g., Autel TS508) to try and read the sensor data (ID, pressure, temperature, battery status) directly from the rear left wheel.
5. Confirm Sensor Failure: If the tool cannot get a response from the sensor, the sensor's internal battery is dead or it is otherwise faulty. The sensor needs to be replaced.
6. Check Sensor Registration: If the tool *can* read the sensor but the code persists, the sensor's ID may not be correctly registered in the BCM. Attempt a TPMS relearn procedure.
7. Professional Diagnosis: If a new, properly registered sensor does not resolve the issue, the problem may lie in the TPMS receiver's wiring or the BCM itself, which requires professional diagnosis with advanced tools.

Parts You'll Likely Need

• Tire Pressure Monitoring System (TPMS) Sensor (OEM #40700-JK00C) — This is the component that fails, most often due to an expired internal battery. The entire unit must be replaced. The OEM part for early models was 40700-JK00B or 40700-JK00C. These may be superseded by newer numbers like 40700-1LA0A, 40700-1LA0C, or 40700-1LA0D. It is critical to verify the correct part number for the vehicle's specific build date, as there was a change around March 2010.
  Trusted brands: Infiniti (OEM), Schrader (often the OEM manufacturer), Huf/Beru, Denso, TYC, Alligator Sens.it
  OEM price range: $70-$115
  Aftermarket price range: $35-$80
• TPMS Sensor Service Kit (OEM #40704-JK00A) — This kit contains the single-use nut, valve core, and rubber grommet/seal. It should always be replaced when installing a new sensor or when servicing a tire to prevent air leaks.
  Trusted brands: Dorman, Schrader, ACDelco
  OEM price range: $15-$25
  Aftermarket price range: $5-$15

Related Codes That Often Appear With This One

• C1708, C1709, C1710 — These are the codes for the other three wheels (Front-Left, Front-Right, Rear-Right). Seeing multiple or all four codes at once can indicate that all sensor batteries are failing around the same time due to age, or point to a central issue like widespread RF interference or a faulty TPMS receiver.

Technical Service Bulletins (TSBs) & Recalls

• ITB13039A / NTB13-088a: Discusses general TPMS diagnostics and specifically mentions 'Radio frequency interference causing a 'No Data' (C1708, C1709, C1710, C1711) condition'.

Platform-Specific Known Issues

• Per Infiniti TSB ITB13039A, these vehicles are susceptible to radio frequency interference from aftermarket electronics, which can mimic a failed sensor and trigger code C1711. Owners on forums frequently trace TPMS issues back to cheap USB chargers.
• The TPMS system in this generation does not automatically learn new sensor IDs. A specialized tool is required to perform an OBD relearn procedure every time a sensor is replaced or wheels are rotated, which can be an inconvenience for owners with separate winter and summer wheel sets.

Mechanic-Grade Diagnostic Values

• Tire pressures for manual relearn procedure (early models) — expected: FL: 34 psi, FR: 31 psi, RR: 29 psi, RL: 26 psi. Failure: This procedure is used to initiate learning mode, not to indicate a failure. The system will not enter learning mode if pressures are not set to these specific, differing values.

Scan Tool Commands That Help

• Nissan CONSULT-III / CONSULT 3+: ID Registration (Tire Pressure Sensor) — This function is required to write the unique ID of a new TPMS sensor into the BCM's memory. It is used every time a sensor is replaced. The technician uses the tool to select each wheel position and activate the new sensor to capture its ID, which is then saved to the vehicle.

Wiring & Ground Locations

• TPMS Receiver / Control Unit — Behind the glove box. Access requires removing the glove box assembly and a plastic cover behind it.. While a C1711 code alone points to a single sensor, if you have codes for all four wheels (C1708-C1711), a failure of this central receiver is a likely cause. Knowing its location is critical for testing or replacement after confirming the wheel sensors themselves are transmitting.
• TPMS Reset Connector — On pre-2011 models, this is typically a single-wire connector taped to a harness near the OBD-II port under the driver's side dashboard.. On applicable early models, grounding this wire's pin six times puts the system into a learning mode. However, users report this connector is absent on 2011 and newer models, making a scan tool necessary for relearn procedures.

Real Owner Repair Stories

• MyG37 forum user 'milosz' (2013 Infiniti G37x (platform sibling)) — TPMS warning light on, with OBD-II codes for 'No Data' from all four sensors (C1708, C1709, C1710, C1711).
  ❌ Tried (didn't work) Initially suspected a single failed sensor or the BCM.
  ✅ What actually fixed it The user diagnosed that the central 'TPMS Antenna' (the receiver module) had failed. They replaced the module (P/N 40740-1NC2A) located behind the glove box. After clearing the codes, the TPMS light went off and the system functioned correctly.

OEM Part Supersession History

• 40740-JK00A, 40740-JK01B → 40740-1NC2A — This is the part number for the separate TPMS Receiver/Control Unit module, not the wheel sensor. It is relevant when diagnosing faults for multiple wheels simultaneously.
  Heads up: This part is distinct from the in-wheel sensors. Replacing wheel sensors will not fix a faulty receiver module.

Model Year Variations Within This Range

• 2011-2012: Owners and technicians report that the manual TPMS relearn procedure, which involves a reset plug near the OBD-II port, is not available on 2011 and newer models. These later models require a scan tool like the Nissan CONSULT-III or a capable aftermarket equivalent to register new TPMS sensor IDs to the BCM.