P0725 code meaning
Engine Speed Input Circuit
Powertrain system Generic code P07xx codes Check engine light
What P0725 means
The transmission module needs engine speed for converter slip, shift quality and to check the turbine speed. Today it almost always arrives over CAN from the engine module with a validity flag; only GM's 2007 Allison 1000 tables show a separate engine speed sensor read by the transmission module. P0725 is the general fault of this input; with CAN it means the engine module marks its speed value as invalid. Saab's Aisin transmissions and a 2006 GM table set it after about 4 s, the GM table with immediate MIL. A Saab bulletin notes that behind P0725 there is always a crankshaft or camshaft sensor code in the engine module (P0016, P0335–P0339) – so read the engine module first. Limp mode follows; a completely missing CAN message is U0100.
P0725 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0725
- Transmission warning lamp, possibly check engine light
- Torque converter clutch locked out
- Harsh shifts or limp mode
- Often an engine code (crankshaft sensor) as well
Common causes of P0725
- Most likelyCrankshaft or camshaft sensor fault in the engine module (speed invalid there)
- PossibleCAN fault between engine and transmission module (wiring, termination, connector)
- Less likelyEngine module software or fault
- Less likelyTransmission module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine speed signalCAN busTransmission control module
What each part of P0725 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7 | Area: transmission. |
| 25 | The exact fault in that area. |
What to do next
- Note P0725 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0725
What does P0725 mean?
P0725 means "Engine Speed Input Circuit". The transmission module needs engine speed for converter slip, shift quality and to check the turbine speed. It is a generic code, so it means the same on every make.
Is it safe to drive with P0725?
Drive gently and only to a workshop. With P0725 the car can go into limp mode (reduced power) to protect itself.
Will P0725 fail an emissions test?
Yes, it can. P0725 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0725 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0725 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.