C1708 on 2014-2015 Infiniti Q70: TPMS 'No Data' Fault Causes and Fixes

What's Unique About the 2014-2015 Infiniti Q70

The Infiniti Q70 and related platforms like the QX70 and M-series are specifically mentioned in Technical Service Bulletin ITB13039A for being susceptible to radio frequency (RF) interference from aftermarket accessories. Forum users across multiple brands confirm that cheap, poorly-shielded electronics like phone chargers, dash cams, and even some wireless phone charging docks can emit RF noise that jams the 315 MHz signal from the TPMS sensor. This interference can cause a C1708 code even if the sensor itself is functional. This makes unplugging all 12V accessories a crucial, zero-cost first diagnostic step before assuming parts have failed.

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 remains illuminated.
• Vehicle information display may show a "Check Tire Pressure" message.
• Inability to read the pressure of one specific tire using a TPMS scan tool.
• Tire pressure reading for the affected wheel may show as "--" or be blank on the vehicle's information display.

Most Likely Causes

1. Dead TPMS Sensor Battery 🔴 High Probability → Shop Tire Pressure Monitoring System (TPMS) Sensor TPMS sensor batteries are non-rechargeable and have a finite lifespan, typically 7-10 years. For a 2014-2015 vehicle, the original sensors are at or nearing the end of their expected service life, making battery failure the most common cause of a 'No Data' condition.
   How to confirm: Use a TPMS activation tool (e.g., Autel, ATEQ) to attempt to 'wake' or 'trigger' the sensor. If the tool cannot get a response (ID, pressure, battery status) from the sensor for the front-left wheel, the sensor has failed.
   Typical fix: Replace the TPMS sensor in the affected wheel. The new sensor must be registered to the vehicle using a TPMS scan tool. It is often wise to replace all four sensors if they are original to avoid repeat repairs as the others are likely to fail soon.
   Est. part cost: $40-$85 per sensor
2. Radio Frequency (RF) Interference 🟡 Medium Probability As documented in TSB ITB13039A, Infiniti vehicles are sensitive to RF noise from aftermarket devices (especially phone chargers, dash cams, and wireless chargers) plugged into the 12V power outlets. This noise can jam the 315 MHz frequency used by the TPMS sensors, preventing the BCM from receiving the signal.
   How to confirm: Unplug all aftermarket electronic devices from the car's power outlets (cigarette lighters). Clear the trouble codes (if possible) and drive the vehicle for 10-15 minutes above 25 mph to see if the code returns or the light goes out. If the code does not return, one of the devices was the cause.
   Typical fix: Remove or replace the interfering electronic device with a higher-quality, better-shielded alternative. Sometimes, adding a ferrite core to the power cable of the device can suppress the interference.
   Est. part cost: $0-$50

Rare But Worth Checking

• Faulty TPMS Control Module / Receiver: This is uncommon, but if multiple TPMS codes (e.g., C1708, C1709, C1710, C1711) are present and new sensors do not resolve the issue, the receiver module itself could be the problem. On the related G37 platform, a user on the MyG37 forum with all four 'No Data' codes fixed the issue by replacing the TPMS radio transceiver (P/N 40740-1NC2A) located behind the glove box after two sets of new sensors failed to work. The BCM is also located in the passenger kick panel area and can be damaged by water intrusion from a clogged sunroof drain, causing various electrical issues including TPMS faults.
• Weak Vehicle Battery or Poor Ground: Low system voltage from a failing car battery or a corroded ground connection can cause various electronic modules, including the BCM and TPMS receiver, to malfunction and set communication codes. A Reddit user with a long list of codes including C1708-C1711 was advised that low voltage could be a contributing factor.

Diagnosis Steps

1. Verify the symptom: Confirm the TPMS light flashes for about a minute on startup and then stays on. A solid light on startup indicates low pressure, not a system fault.
2. Check for RF Interference: Unplug ALL aftermarket devices from the 12V power outlets (phone chargers, dash cams, etc.). This is the most important and cost-effective first step.
3. Drive the Vehicle: After unplugging devices, drive the car for several minutes above 25 mph to allow the system to re-scan and potentially clear the light on its own.
4. Scan the Sensors: Use a TPMS activation tool to attempt to read the ID, pressure, temperature, and battery status of each of the four tire sensors. Confirm if the front-left sensor is the one not responding.
5. Confirm Sensor Location (Optional but Recommended): If a TPMS tool is not available, rotate the front-left tire with the front-right tire. Clear the codes and drive. If the code changes to C1709 (Front-Right), you have confirmed the sensor in that wheel is faulty.
6. Replace Faulty Sensor: If a sensor is confirmed to be bad, have it replaced at a tire shop. The tire must be dismounted to access the sensor.
🎬 See how to replace TPMS sensors without a tire machine
7. Register New Sensor: After installation, the new sensor's unique ID must be registered to the vehicle's BCM using a TPMS-capable OBD-II scan tool.
🎬 Watch: How to program and register your new tire sensors
8. Final Test Drive: Drive the vehicle for several minutes to ensure the TPMS light turns off and the system recognizes the new sensor.

Parts You'll Likely Need

• Tire Pressure Monitoring System (TPMS) Sensor (OEM #40700-3JA0B, 40700-3JA0A) — The internal, non-replaceable battery in the sensor is the most common failure point, requiring replacement of the entire sensor unit. The part number 40700-3JA0B is a common replacement for 40700-3JA0A for this vehicle generation.
  Trusted brands: Bosch, Schrader, VDO, Autel, Huf, OEM Nissan/Infiniti
  OEM price range: $70-$115
  Aftermarket price range: $40-$75

Related Codes That Often Appear With This One

• C1709, C1710, C1711 — These codes correspond to the other three wheels (Front-Right, Rear-Right, Rear-Left). Seeing them together suggests either multiple sensors have failed due to age, or there is a central issue like widespread RF interference or a faulty TPMS receiver module. A user on the MyG37 forum reported all four codes when the central TPMS receiver was the actual point of failure.
• U1000 — This is a CAN communication error. If it appears alongside TPMS codes, it could indicate a broader electrical issue affecting the BCM or related wiring, especially if aftermarket electronics like a remote starter have been installed or removed.

Technical Service Bulletins (TSBs) & Recalls

• ITB13039A: Addresses diagnosis of TPMS systems, including a "No Data" condition (C1708-C1711) caused by radio frequency interference. It is a foundational document for troubleshooting this specific code.

Platform-Specific Known Issues

• Infiniti Technical Service Bulletin ITB13039A was issued to address codes C1708, C1709, C1710, and C1711 being caused by radio frequency interference from aftermarket devices, particularly phone chargers.
• The BCM, which receives TPMS data, is located in the passenger-side kick panel area and can be susceptible to water damage from clogged sunroof drains, which can cause a host of electrical problems including TPMS failures.

Mechanic-Grade Diagnostic Values

• Chassis Ground Resistance — expected: < 1.0 Ω (Ohm). Failure: A reading significantly higher than 1.0 Ω indicates a poor ground connection, which can cause unpredictable behavior in electronic modules like the BCM and TPMS receiver.

Scan Tool Commands That Help

• Infiniti CONSULT-III / CONSULT-III Plus: Work Support > ID REGIST — This function is required after replacing a TPMS sensor. It allows the technician to manually enter the new sensor's unique ID and write it to the BCM's memory, allowing the system to recognize it.
• Advanced Aftermarket Scan Tool (e.g., Autel, Launch): TPMS Relearn / OBD Relearn — This function performs the same action as the OEM tool, allowing the registration of new sensor IDs to the vehicle's control module after a sensor replacement.

Wiring & Ground Locations

• TPMS Control Unit (Receiver/Antenna) — Located behind the glove box assembly. The glove box must be removed to access it.. This is the module that receives the 315 MHz signals from all four wheel sensors. If this module fails, it can no longer receive data, often causing all four 'No Data' codes (C1708-C1711) to appear simultaneously, even with new sensors.
• Body Control Module (BCM) — Located in the passenger-side kick panel area, near the floor.. The BCM is the central computer that processes the data from the TPMS receiver. It is susceptible to water damage from clogged sunroof drains, which can cause C1708 and other electrical faults. Its ground connections are critical for proper function.
• Engine Bay Ground Points (Y51 Chassis) — Multiple grounds are located on the driver's side of the engine bay, attached to the block and strut tower.. Corroded or loose engine and chassis grounds can introduce electrical noise and voltage drops, affecting the performance of sensitive electronics like the BCM and TPMS receiver, potentially leading to communication codes.

Real Owner Repair Stories

• MyG37 Forum user 'milosz' (2013 Infiniti G37x (platform mate to Q70)) — TPMS light flashing then solid, with codes C1708, C1709, C1710, and C1711 all present.
  ❌ Tried (didn't work) Having a tire shop 'pair' known-good TPMS sensors.
  ✅ What actually fixed it The user replaced the TPMS Antenna/Transceiver module (Part No. 40740-1NC2A) located behind the glove box. After replacing the module and clearing the codes, the TPMS light went out and the system functioned correctly.

When the Usual Fixes Don't Work

• In instances where all four codes (C1708, C1709, C1710, C1711) are present, the root cause may not be the individual wheel sensors. A documented repair on a platform-mate G37 showed that even after replacing the wheel sensors, the codes persisted. The actual fix was the replacement of the central TPMS receiver module located behind the glove box, part number 40740-1NC2A. This demonstrates that when multiple 'No Data' codes appear, a central system failure should be considered before replacing all four sensors.

OEM Part Supersession History

• 40700-3JA0A → 40700-3JA0B — Standard part revision by the manufacturer.
  Heads up: These parts are generally cross-compatible for the 2014-2015 Q70. The newer part number is the correct service replacement.
• N/A → 40740-1NC2A — This is the part number for the TPMS Receiver/Antenna module, which is a separate component from the wheel sensors.
  Heads up: This module fits a wide range of Infiniti models from the era, including the G37, Q40, Q60, and is the likely correct part for the Q70 experiencing a central TPMS failure.