P0989

Transmission Fluid Pressure Sensor/Switch E Circuit Low

Q: Is it safe to drive with P0989?

Short distances are usually fine, but the transmission may shift harshly or enter limp mode. Have it diagnosed before longer trips.

Q: Can I just clear P0989?

It returns until the sensor or wiring is repaired. Clearing it does not restore an accurate pressure signal.

Transmission control Generic OBD-II Medium

What it means

P0989 means the transmission fluid pressure sensor/switch E circuit is reading low voltage. The control module relies on this signal to time and firm up shifts, so a low or lost reading can cause harsh shifting or a limp-mode fallback. Check the fluid level, then the sensor wiring and connector, before replacing the sensor itself.

Medium

Can I keep driving? Driveable but fix soon — a bad pressure signal can push the transmission into a default/limp strategy with harsh or limited shifting.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

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 or delayed shifting
Erratic shift behavior
Possible limp (fail-safe) mode with limited gears

Common causes

Most likely first

Faulty transmission fluid pressure sensor/switch ELikely
Wiring shorted low or open in the sensor circuitCommon
Corroded or loose connectorCommon
Low transmission fluid affecting the pressure readingLess often
Faulty transmission control module (TCM)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and check transmission fluid level and condition.
Inspect the pressure sensor connector and wiring for a short-to-ground or open.
Check the sensor's signal voltage with a scan tool against the expected range.
Replace the fluid pressure sensor/switch E if its reading is out of range.
If wiring and sensor are good, have the TCM tested and replaced as a last resort.

FAQ

Quick answers

Is it safe to drive with P0989?+

Short distances are usually fine, but the transmission may shift harshly or enter limp mode. Have it diagnosed before longer trips.

Can I just clear P0989?+

It returns until the sensor or wiring is repaired. Clearing it does not restore an accurate pressure signal.

Read & clear P0989 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