← View Generic P0117 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
P0117: Engine Coolant Temperature Sensor Circuit Low Input
on 2021 Honda PASSPORT
Fix Cost
$20 - $150
Parts & Labor
Difficulty
2/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2021 Honda
PASSPORT
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Important for 2021 Honda PASSPORT Owners
Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0117 Mean on 2021 Honda PASSPORT?
The engine coolant temperature sensor is reading extremely high temperature (low resistance = high temp).
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Symptoms
- • Temperature gauge reading hot
- • cooling fans running constantly
- • rich fuel mixture
- • poor performance.
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Common Causes
- • Faulty coolant temperature sensor
- • wiring short to ground
- • sensor contamination
- • actual overheating.
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How to Fix P0117 on 2021 Honda PASSPORT
Replace coolant temperature sensor, repair wiring shorts, check for actual overheating condition, clean sensor area.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
View 2021 Honda PASSPORT SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with P0117
P0115
Sequential Code
P0115: Fuel Temperature Sensor Circuit Malfunction
Medium
P0116
Sequential Code
Engine Coolant Temperature Sensor Range/Performance Problem
Medium
P0118
Sequential Code
Engine Coolant Temperature Sensor Circuit High Input
Medium
P0119
Sequential Code
P0119: Fuel Temperature Sensor Circuit Malfunction
Medium
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system