The DPF pressure sensor circuit is reading below range — normally electrical rather than a blocked filter.
P2454 — also written P2454, P 2454, 2454 — is the OBD-II code for dpf pressure sensor circuit low. Same code, same fix: this page covers every spelling of it.
P2454 is a emissions fault code, typically costing £60–£350 to put right in a UK garage.
What causes P2454?
- Short to ground on the signal wire
- Failed sensor
- Damaged connector
- Lost 5V reference
How P2454 is fixed
- Back-probe for 5V reference and signal
- Replace the sensor
- Repair the wiring
P2454 repair cost in the UK
Most P2454 repairs land between £60–£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 P2454?
Yes short-term.
Urgency: medium.