P0117 on Nissan Altima
Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Nissan Altima (2020–2026, 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP)).
1. Symptoms of P0117 on Nissan Altima
When the Engine Control Module (ECM/PCM) on your Nissan Altima (2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP)) logs fault code P0117, drivers commonly observe:
2. Most Likely Causes on Nissan Altima
Historical warranty claims and technical repair bulletins for Nissan Altima point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Nissan Altima
Read ECT live PID on scanner. If it reads 284°F (140°C) or higher with engine cold, a short to ground exists. on the Nissan Altima equipped with 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP).
Unplug sensor connector while watching live data. If temperature drops to -40°F (-40°C), the sensor itself is shorted. on the Nissan Altima equipped with 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP).
If reading stays pegged at max with sensor unplugged, inspect harness for pinch points grounding against engine block. on the Nissan Altima equipped with 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP).
Allow engine to cool, unscrew old ECT sensor from coolant crossover pipe or thermostat housing, install new OEM sensor with fresh thread sealant. on the Nissan Altima equipped with 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP).
Bleed air from cooling system, clear DTCs, and verify normal temperature rise on live data. on the Nissan Altima equipped with 2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP).
Equipment for Diagnosing Nissan Altima (P0117)
VVT Oil Control Solenoid Valve
Restores accurate camshaft timing and oil pressure regulation on Nissan Altima.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Nissan Altima
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Nissan Altima:
4. Nissan Altima P0117 FAQs
What causes code P0117 to trigger on a Nissan Altima?
On the Nissan Altima (2.5L 4-Cyl (188HP) / 2.0L Variable Compression Turbo (248HP)), P0117 is most frequently caused by ECT sensor internal short to ground or Short circuit to ground in ECT signal wiring harness.
Where is the OBD-II port located on my Nissan Altima?
On the Nissan Altima, the 16-pin DLC diagnostic connector is located Under driver side dashboard to the right of hood release. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Nissan Altima with code P0117?
No. The ECU thinks the engine is at 280°F+ (overheating) and runs rich or disables cooling fan logic. Given that P0117 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.