P0889 code meaning
TCM Power Relay Sense Circuit Range/Performance
Powertrain system Generic code P08xx codes Check engine light
What P0889 means
Some gearboxes draw their power through a relay, such as the transmission control relay in Chrysler's fuse box that feeds the solenoids. P0885 to P0887 cover the coil control of that relay, P0888 to P0892 its sense line, which reads back the switched output and compares it with the command. A dead relay leaves all solenoids without power, so the gearbox drops into its hydraulic emergency gear. P0889 means the read-back voltage does not fit the switching state or the system voltage: clearly below battery voltage, a voltage drop across the contact or a delayed drop-out. No maker publishes a strategy.
P0889 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0889
- MIL or gearbox warning
- Occasional limp mode
Common causes of P0889
- Most likelyRelay contact with high resistance
- PossibleMoisture or corrosion in relay or socket
- PossibleGround or supply problem
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission relayRelay wiringFuseTransmission control module
What each part of P0889 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8 | Area: transmission. |
| 89 | The exact fault in that area. |
What to do next
- Note P0889 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 P0889
What does P0889 mean?
P0889 means "TCM Power Relay Sense Circuit Range/Performance". Some gearboxes draw their power through a relay, such as the transmission control relay in Chrysler's fuse box that feeds the solenoids. It is a generic code, so it means the same on every make.
Is it safe to drive with P0889?
Drive gently and only to a workshop. With P0889 the car can go into limp mode (reduced power) to protect itself.
Will P0889 fail an emissions test?
Yes, it can. P0889 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 P0889 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0889 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.