Hybrid Battery Temperature Sensor Circuit Low
The P0C35 code indicates that the hybrid battery temperature sensor circuit is reading a voltage lower than expected. This sensor monitors the temperature of the hybrid battery pack to prevent overheating. A low circuit condition can be caused by a faulty sensor, damaged wiring, or a short to ground. This can lead to incorrect temperature readings, potentially causing the hybrid system to limit performance or shut down to protect the battery.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced hybrid system performance or limp mode
2. Most Common Causes
- Faulty hybrid battery temperature sensor 'F' with altered resistance characteristics
- Short to ground in the sensor wiring to the battery management module (BMS)
- Corroded, oxidized, or damaged connector pins causing excessive parasitic resistance
- Internal BMS failure preventing proper voltage reference to the sensor
- Open or out-of-spec pull-up resistor in the sensor circuit
- Physical damage to the sensor harness due to vibration or extreme thermal exposure in the battery pack
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve the code and verify P0C35 is present.
Step 2: Inspect the hybrid battery temperature sensor and its wiring for damage, corrosion, or shorts to ground.
Step 3: Measure the sensor's resistance and compare to manufacturer specifications; replace if out of range.
Step 4: Clear the code and test drive to see if it returns.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can lead to battery overheating or reduced performance. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the sensor location and vehicle model.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.