The transmission control module is not receiving a valid engine speed signal, so it cannot time shifts correctly.
P0725 — also written PO725, P 0725, 0725 — is the OBD-II code for engine speed input circuit malfunction. Same code, same fix: this page covers every spelling of it.
P0725 is a transmission fault code, typically costing £120–£700 to put right in a UK garage.
What causes P0725?
- Crank sensor fault
- CAN communication fault between engine and gearbox modules
- Wiring or connector damage
How P0725 is fixed
- Scan both modules for related codes
- Replace the crank sensor if it is dropping out
- Repair the CAN wiring
P0725 repair cost in the UK
Most P0725 repairs land between £120–£700 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 P0725?
Expect limp mode. Recover if the car will not shift.
Urgency: high.