Code
C1336
HYUNDAI
C — Chassis
Spare Sensor Hardware Fail | Sensor 5 Fault | Spare Wheel Sensor Fault
Views:
UK: 17
EN: 28
RU: 19
AI status
Completed
Completed
100%
Causes
- Failed or discharged TPMS sensor battery
- Physically damaged sensor or sensor mounting hardware
- Incorrect or missing sensor ID (not learned to module)
- Poor RF reception (spare wheel location, shielding, aftermarket wheel material)
- Receiver/module fault or bad antenna/connector
- Corroded or broken wiring to receiver/module
Symptoms
- TPMS warning lamp illuminated or system message indicating spare sensor fault
- No pressure/temperature reading shown for spare wheel or shows as unknown
- TPMS learn/relearn procedure fails for sensor 5
- Intermittent or sporadic spare sensor data updates
- Service reminder or diagnostic trouble code stored in TPMS module
What to check
- Retrieve full DTC list and freeze-frame data with a capable scan tool
- Use a TPMS diagnostic tool to read sensor 5 ID, battery level and transmission data
- Visually inspect the spare wheel sensor (if accessible) for physical damage or missing components
- Inspect antenna, receiver module and related connectors for corrosion, loose connections or water intrusion
- Confirm vehicle has correct TPMS sensors for the market frequency (315/433 MHz)
- Check for aftermarket wheels, hub caps or repair that may block RF signal
Signal parameters
- RF transmit frequency: 315 MHz or 433 MHz (region-dependent)
- Sensor ID: unique 4–8 digit HEX/decimal identifier readable by TPMS tool
- Battery voltage ~3.0 V (new lithium cell); low battery
- Transmission interval: wakes on wheel rotation or vehicle wake; should transmit on start/drive
- Data payload: pressure (kPa/PSI), temperature (°C/°F), sensor ID, battery status
- CAN/Central module messages: TPMS status and sensor IDs present on vehicle network (check with scan tool)
Diagnostic algorithm
- Connect a factory-level or bi-directional scan tool and read stored codes and live TPMS data.
- Confirm the code C1336 is current. Note freeze-frame or any related TPMS codes.
- Use a dedicated TPMS sensor tool to interrogate Sensor 5 (spare). Record sensor ID, battery level, pressure and temperature. If the tool cannot find the sensor, move to step 6.
- Inspect the spare wheel sensor physically (if accessible): check for damage, corrosion, loose mounting, proper valve stem seating or broken antenna tab.
- Verify the sensor type/frequency matches vehicle specification. If incorrect sensor installed, replace with correct type and learn to module.
- Check antenna(s)/receiver: inspect connectors, wiring harness and ground for continuity and corrosion. Repair any damaged wiring or connectors.
- Attempt a TPMS relearn/initialization per Hyundai procedure. If relearn fails specifically for sensor 5, try forcing sensor transmit by rotating wheel or inflating/deflating while scanning.
- If possible, swap the spare sensor with a known-good sensor and re-attempt read/relearn to determine if fault follows the sensor or stays with vehicle (indicates receiver/module fault).
- If sensor is confirmed dead or faulty replace the sensor and perform a full learn/initialization sequence.
- If a replacement sensor does not resolve the fault, test or replace receiver/module and recheck antenna wiring. Re-scan for codes and confirm normal operation.
- Clear codes and test drive to ensure no reoccurrence and that the TPMS reports the spare sensor correctly.
Likely causes
- Dead/weak battery in spare wheel TPMS sensor
- Sensor electronics failed from impact or corrosion
- Spare wheel location (inside trunk or underbody) blocking RF transmission
- Sensor not programmed/learned to vehicle after replacement
- Faulty receiver module or antenna connection
Fault status
Status
Spare TPMS sensor (Sensor 5) hardware failure — communication or sensor malfunction detected.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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