P2026

EVAP Fuel Vapor Temperature Sensor Circuit Low Voltage

Q: Is it safe to drive with P2026?

Yes — it doesn't affect starting or drivability. It matters mainly for passing an emissions test.

Q: Can I just clear P2026?

It returns until the sensor or its wiring is repaired.

Evaporative emissions (EVAP) Generic OBD-II Low

What it means

P2026 means the EVAP fuel vapor temperature sensor is sending an abnormally low voltage to the PCM. This sensor helps the evaporative emissions system monitor fuel-tank vapor, so the fault is emissions-related rather than a running problem. The engine starts and drives normally; the usual cause is a wiring short-to-ground or a failed sensor.

Low

Can I keep driving? Safe to keep driving — this is an emissions-monitoring fault; the engine starts and runs normally, but the EVAP monitor may not complete for a smog test.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
No noticeable change in how the car starts or drives
EVAP readiness monitor may not complete (can fail emissions testing)

Common causes

Most likely first

Faulty EVAP fuel vapor temperature sensorLikely
Signal wire shorted to ground or open in the sensor circuitCommon
Corroded or loose connector at the sensorCommon
Faulty powertrain control module (PCM) — rareLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data to confirm the low-voltage condition.
Inspect the sensor connector and wiring for a short to ground, opens, or corrosion.
Measure the sensor's resistance and reference voltage against spec.
Replace the fuel vapor temperature sensor if it reads out of range.
Clear the code and let the drive cycle re-run the EVAP monitor.

FAQ

Quick answers

Is it safe to drive with P2026?+

Yes — it doesn't affect starting or drivability. It matters mainly for passing an emissions test.

Can I just clear P2026?+

It returns until the sensor or its wiring is repaired.

Read & clear P2026 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX