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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Common Symptoms
- Check Engine Light on
- No driveability concerns
- Failed emissions test
- EVAP monitor will not run
- No other noticeable symptoms
Probable Causes (Ranked by Likelihood)
- 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
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
Step-by-Step Diagnostic Procedure
-
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)
Commonly Affected Vehicles
- 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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