P0117 2015 Chevrolet Silverado Code - Engine Coolant Temperature Circuit Low Input
Quick Answer
The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0117 2015 Chevrolet Silverado indicates Engine Coolant Temperature Circuit Low Input.
- Common causes
- Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0117 2015 Chevrolet Silverado Description
The ECM uses this high side coolant rationality diagnostic to determine if the input from the ECT sensor is skewed warmer than normal. The internal clock of the ECM will record the amount of time the ignition is OFF. If the calibrated ignition OFF time is met at start-up, the ECM will compare the temperature difference between the ECT and the intake air temperature (IAT) to determine if the temperatures are within an acceptable operating range of each other. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a the ECT is warmer than 139°C (282°F) for greater than 5 s.
What are the Possible Causes of the DTC P0117 2015 Chevrolet Silverado?
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature sensor harness is open or shorted
- Engine Coolant Temperature sensor electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0117 2015 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0117 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0117 2015 Chevrolet Silverado Code
1. What does the OBDII code P0117 mean for a 2015 Chevrolet Silverado?
P0117 indicates that the Engine Control Module (ECM) has detected a low voltage signal from the Engine Coolant Temperature (ECT) sensor, suggesting a circuit issue.
2. What are the common symptoms of a P0117 code?
Symptoms include a check engine light, poor fuel efficiency, hard starting, rough idling, engine overheating, and inaccurate temperature gauge readings.
3. What causes the P0117 code on a 2015 Chevrolet Silverado?
Common causes include a faulty ECT sensor, damaged wiring or connectors, a short circuit, low coolant levels, or a malfunctioning ECM.
4. Can driving with a P0117 code damage my engine?
Yes, ignoring this code can lead to engine overheating or performance issues, potentially causing long-term damage if not addressed.
5. How do I diagnose the P0117 code?
Diagnosis involves checking the ECT sensor with a multimeter, inspecting wiring and connectors for damage, verifying coolant levels, and using a scan tool to monitor temperature readings.
6. How is the P0117 code fixed?
Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring or connectors, refilling or flushing coolant, or in rare cases, reprogramming or replacing the ECM.
7. How much does it cost to fix a P0117 code?
Repair costs vary but typically range from $150 to $300, depending on whether the ECT sensor or wiring needs replacement.
8. Can a low coolant level trigger the P0117 code?
Yes, low coolant levels can cause inaccurate temperature readings and trigger the P0117 code.
9. Where is the ECT sensor located on a 2015 Chevrolet Silverado?
The ECT sensor is usually located near the thermostat housing or on the engine block, where it can monitor coolant temperature.
10. Can a bad thermostat cause the P0117 code?
While rare, a stuck-open thermostat can lead to low coolant temperatures, which might contribute to the P0117 code being set.
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