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P0117 on Chevrolet Colorado

Engine Coolant Temperature Sensor 1 Circuit Low

Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Chevrolet Colorado (2021–2026, 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road).

Verified OEM Telemetry & Field Repair Tree
Chevrolet Colorado2021–2026
Chevrolet Colorado
Truck2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Colorado 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 Chevrolet Model:
Diagnose P0117 on Specific Colorado Model Year:

1. Symptoms of P0117 on Chevrolet Colorado

When the Engine Control Module (ECM/PCM) on your Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road) logs fault code P0117, drivers commonly observe:

Check Engine Light on on Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road)
Radiator radiator fans running constantly at high speed on Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road)
Temperature gauge pegged at maximum H or not reading on Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road)
Engine hard starting when cold (flooding from excess fuel) on Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road)
Poor gas mileage and rough idling on Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road)
Chevrolet Colorado OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side dashboard, left of center stack. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chevrolet Colorado

Historical warranty claims and technical repair bulletins for Chevrolet Colorado point to the following failure distribution:

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

3. Step-by-Step DIY Repair Guide for Chevrolet Colorado

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 Chevrolet Colorado equipped with 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road.

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 Chevrolet Colorado equipped with 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road.

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 Chevrolet Colorado equipped with 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road.

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 Chevrolet Colorado equipped with 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road.

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 Chevrolet Colorado equipped with 2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road.

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

Equipment for Diagnosing Chevrolet Colorado (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 Chevrolet Colorado.

$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.

Compare OEM & Aftermarket Replacement Sensors for Chevrolet ColoradoVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Chevrolet Colorado

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chevrolet Colorado:

4. Chevrolet Colorado P0117 FAQs

What causes code P0117 to trigger on a Chevrolet Colorado?

On the Chevrolet Colorado (2.7L Turbo 4-Cyl (310HP) / 3.6L V6 (308HP) / ZR2 AEV / Bison Off-Road), 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 Chevrolet Colorado?

On the Chevrolet Colorado, the 16-pin DLC diagnostic connector is located Under driver side dashboard, left of center stack. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Chevrolet Colorado 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.