Evaporative Emission System Fuel Vapor Temperature Sensor Circuit Low
The P2026 code means the vehicle's onboard diagnostic system has detected: Evaporative Emission System Fuel Vapor Temperature Sensor Circuit Low. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $300 (parts and labor)
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What Are the Symptoms of P2026?
- Check Engine Light on
- No driveability concerns
- Failed emissions test
- EVAP monitor will not run
- No other noticeable symptoms
What Causes P2026? (Most Likely First)
- Short to ground in vapor temperature sensor circuit Very High
- Failed fuel vapor temperature sensor High
- Water intrusion in connector Moderate
- Damaged wiring harness Moderate
- PCM input circuit fault Low
Can I Still Drive with P2026?
Yes, but fix soon. P2026 is rated low severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring the light.
Frequently Asked Questions
What does P2026 mean?
P2026 indicates the fuel vapor temperature sensor circuit is reading below the minimum expected voltage, usually from a short to ground in the wiring or a failed sensor.
Can I drive with a P2026 code?
Yes, driving is completely safe. This is an emissions monitoring issue only.
How much does it cost to fix P2026?
Expect $100 to $300 for repairs, typically involving sensor replacement or wiring repair.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2026?
-
Confirm P2026 with scan tool data
-
Inspect fuel vapor temperature sensor connector for moisture
-
Measure sensor circuit voltage at the connector
-
Check for wiring shorts to ground
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get P2026?
- 2009-2015 Volkswagen Jetta 2.0L TDI
- 2012-2018 BMW 328d 2.0L Diesel
- 2010-2016 Mercedes-Benz ML350 3.0L BlueTEC
- 2014-2020 Ram 3500 6.7L Cummins
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