An evap system sensor is reading out of range. Emissions-only in practice, but it lights the engine management lamp.
P2026 — also written P2O26, P 2026, 2026 — is the OBD-II code for evaporative emission system sensor circuit. Same code, same fix: this page covers every spelling of it.
P2026 is a emissions fault code, typically costing £30–£350 to put right in a UK garage.
What causes P2026?
- Failed evap sensor
- Cracked evap hose
- Loose fuel filler cap
- Corroded connector
How P2026 is fixed
- Fit and torque the filler cap correctly
- Smoke-test the evap system
- Replace the sensor
P2026 repair cost in the UK
Most P2026 repairs land between £30–£350 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Can you drive with P2026?
Yes, but the light is an MOT failure on cars first used from 2018.
Urgency: low.