P34C4 on 2013-2016 Nissan Pathfinder — Hybrid Battery Temperature Sensor Circuit
1 vehicles · 1 makes · $2,000-$4,000 repair
Most Reported On
P34C4 is an OBD-II diagnostic trouble code meaning “Hybrid Battery Temperature Sensor Circuit.” P34C4 is a hybrid/electric powertrain code indicating a fault in a hybrid battery temperature sensor circuit. The high-voltage battery pack uses multiple temperature sensors so the hybrid control system can keep cells within safe limits and manage cooling. When the module reads an implausible, out-of-range, or electrically faulted signal from one of these sensors, it sets a temperature sensor circuit code. It generally protects the battery, so the system may limit hybrid/EV operation, reduce power, or disable the high-voltage system until the sensor data is trusted again. Confirm the exact sensor/letter against the specific manufacturer's service data. This code is most commonly reported on 2013-2016 Nissan Pathfinder, with repair costs ranging from $2,000 to $4,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P34C4, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
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A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
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Autel MaxiCOM MK808S Diagnostic Tool
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Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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FAQ
What does P34C4 mean?
P34C4 stands for "Hybrid Battery Temperature Sensor Circuit." P34C4 is a hybrid/electric powertrain code indicating a fault in a hybrid battery temperature sensor circuit. The high-voltage battery pack uses multiple temperature sensors so the hybrid control system can keep cells within safe limits and manage cooling. When the module reads an implausible, out-of-range, or electrically faulted signal from one of these sensors, it sets a temperature sensor circuit code. It generally protects the battery, so the system may limit hybrid/EV operation, reduce power, or disable the high-voltage system until the sensor data is trusted again. Confirm the exact sensor/letter against the specific manufacturer's service data.
What are the most common causes of P34C4?
The most common causes of P34C4 are: Faulty hybrid battery temperature sensor, Open or shorted wiring in the temperature sensor circuit, Corroded or loose sensor connector inside the battery pack, Moisture intrusion or contamination at the sensor/harness, Poor sensor ground or reference voltage problem, Battery management/ECU module fault (less common). The specific cause varies by vehicle.
How much does it cost to fix P34C4?
Repair costs for P34C4 range from $2,000 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by P34C4?
Au7o has documented P34C4 across 1 vehicle models from 1 manufacturers: Nissan.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.