P0117 on Toyota Tundra
Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Toyota Tundra (2022–2026, 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP)).
1. Symptoms of P0117 on Toyota Tundra
When the Engine Control Module (ECM/PCM) on your Toyota Tundra (3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP)) logs fault code P0117, drivers commonly observe:
2. Most Likely Causes on Toyota Tundra
Historical warranty claims and technical repair bulletins for Toyota Tundra point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Toyota Tundra
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 Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Unplug sensor connector while watching live data. If temperature drops to -40°F (-40°C), the sensor itself is shorted. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
If reading stays pegged at max with sensor unplugged, inspect harness for pinch points grounding against engine block. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
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 Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Bleed air from cooling system, clear DTCs, and verify normal temperature rise on live data. on the Toyota Tundra equipped with 3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP).
Equipment for Diagnosing Toyota Tundra (P0117)
VVT Oil Control Solenoid Valve
Restores accurate camshaft timing and oil pressure regulation on Toyota Tundra.
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 Toyota Tundra
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Toyota Tundra:
4. Toyota Tundra P0117 FAQs
What causes code P0117 to trigger on a Toyota Tundra?
On the Toyota Tundra (3.4L Twin-Turbo V6 (V35A-FTS 389HP) / i-FORCE MAX Hybrid (437HP)), 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 Toyota Tundra?
On the Toyota Tundra, the 16-pin DLC diagnostic connector is located Driver side lower dash assembly near parking brake. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Toyota Tundra 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.