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P0117 on Volkswagen Atlas

Engine Coolant Temperature Sensor 1 Circuit Low

Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Volkswagen Atlas (2020–2026, 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD)).

Verified OEM Telemetry & Field Repair Tree
Volkswagen Atlas2020–2026
Volkswagen Atlas
SUV2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Atlas SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
High urgency level
Est. Repair Cost
$80 - $250 (DIY: $20 - $60)
Parts & Labor DIY
Check P0117 On Another Volkswagen Model:
Diagnose P0117 on Specific Atlas Model Year:

1. Symptoms of P0117 on Volkswagen Atlas

When the Engine Control Module (ECM/PCM) on your Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD)) logs fault code P0117, drivers commonly observe:

Check Engine Light on on Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD))
Radiator radiator fans running constantly at high speed on Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD))
Temperature gauge pegged at maximum H or not reading on Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD))
Engine hard starting when cold (flooding from excess fuel) on Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD))
Poor gas mileage and rough idling on Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD))
Volkswagen Atlas OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower dash trim above footwell. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Volkswagen Atlas

Historical warranty claims and technical repair bulletins for Volkswagen Atlas point to the following failure distribution:

55%
ECT sensor internal short to ground (Volkswagen OEM Part)
25%
Short circuit to ground in ECT signal wiring harness (Volkswagen OEM Part)
12%
Damaged, corroded, or water-contaminated ECT connector (Volkswagen OEM Part)
8%
Faulty PCM / ECM analog input circuit (Volkswagen OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Volkswagen Atlas.

3. Step-by-Step DIY Repair Guide for Volkswagen Atlas

01
Scan ECT Temperature Data

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 Volkswagen Atlas equipped with 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD).

Required Tool: OBD-II Scanner
02
Unplug ECT Sensor Connector

Unplug sensor connector while watching live data. If temperature drops to -40°F (-40°C), the sensor itself is shorted. on the Volkswagen Atlas equipped with 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD).

Required Tool: OBD-II Scanner
03
Inspect Wiring Harness

If reading stays pegged at max with sensor unplugged, inspect harness for pinch points grounding against engine block. on the Volkswagen Atlas equipped with 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD).

Required Tool: Digital Multimeter
04
Replace Engine Coolant Temperature Sensor

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 Volkswagen Atlas equipped with 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD).

Required Tool: 19mm Deep Socket, Ratchet, Coolant Catch Pan
05
Top off Coolant & Clear Codes

Bleed air from cooling system, clear DTCs, and verify normal temperature rise on live data. on the Volkswagen Atlas equipped with 2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD).

Required Tool: Coolant Funnel Kit, OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Volkswagen Atlas (P0117)

Prime Fast Delivery & Verified Fitment
Variable Valve Timing (VVT)

VVT Oil Control Solenoid Valve

4.6 / 5.0 (Direct Fit)

Restores accurate camshaft timing and oil pressure regulation on Volkswagen Atlas.

$34 – $65 Prime
Check Fitment on Amazon
Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

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Other Common Fault Codes on Volkswagen Atlas

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Volkswagen Atlas:

4. Volkswagen Atlas P0117 FAQs

What causes code P0117 to trigger on a Volkswagen Atlas?

On the Volkswagen Atlas (2.0L TSI Turbo (235HP) / 3.6L VR6 (276HP / 4Motion AWD)), 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 Volkswagen Atlas?

On the Volkswagen Atlas, the 16-pin DLC diagnostic connector is located Driver lower dash trim above footwell. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Volkswagen Atlas 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.