P0725

Engine Speed Input Circuit

Q: Is it safe to drive with P0725?

Short term, usually — the engine runs, but the transmission may shift roughly or enter limp mode. Repair it before the shifting problems get worse.

Q: Can I just clear P0725?

It will return while the module isn't getting a reliable engine-speed signal. The sensor, wiring, or communication fault has to be found and fixed.

Transmission Generic OBD-II High

What it means

P0725 means the transmission control module isn't getting a reliable engine-speed (RPM) signal on its input circuit. The transmission uses engine speed to time shifts and torque-converter lockup, so a missing or erratic signal typically causes harsh or wrong-timed shifting or limp mode — not a no-start, since this is an input to the transmission rather than something the engine needs to run. It usually traces to the crankshaft/engine-speed sensor, its wiring, or the data link.

High

Can I keep driving? Usually drivable — the engine still starts and runs, but the transmission may shift harshly, at the wrong points, or drop into limp mode without a reliable RPM signal.

Real-world scan data

Seen in

183

scans in the past year

Found in

<0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P0725 scans

U1000in 38.2% of scans

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
Harsh, erratic, or wrong-timed shifting
Transmission slipping into limp/failsafe mode
Shift points that don't match engine speed

Common causes

Most likely first

Faulty engine-speed (crankshaft position) sensor feeding the signalLikely
Wiring or connector fault in the engine-speed input circuitCommon
Loss of the engine RPM signal shared over the data busCommon
Faulty transmission control module (less common)Less often

How to diagnose & fix

Work through it in order

Scan and compare the engine RPM the transmission module sees with the actual tachometer reading.
Inspect the engine-speed sensor and its wiring and connector.
Check the data-bus communication carrying RPM between modules for faults.
Replace the sensor if it tests bad; suspect the control module only after wiring and bus are verified. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0725?+

Short term, usually — the engine runs, but the transmission may shift roughly or enter limp mode. Repair it before the shifting problems get worse.

Can I just clear P0725?+

It will return while the module isn't getting a reliable engine-speed signal. The sensor, wiring, or communication fault has to be found and fixed.

Read & clear P0725 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