P089A code meaning
Gear Lever X Position Sensor 2 Circuit
Powertrain system Generic code P08xx codes Check engine light
What P089A means
Gear lever position sensor 2 is the redundant second sensor of an electronic selector lever, next to sensor 1 (P0821 ff), for the X or Y axis. The only documented user is GM's electronic range selection with PWM Hall sensors, as in the Cadillac XT4, and only for range, low and high. Following GM's patent, an invalid sensor is dropped and the other carries on; with both invalid the module can request park. P089A, the general circuit fault of X sensor 2, is used by no maker found; GM reports circuit faults through duty-cycle low or high and frequency errors under P089B.
P089A at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P089A
- Gearbox or selector warning in the cluster
- Range selection delayed or limited
- Usually still drivable, sensor 1 takes over
Common causes of P089A
- Most likelyWire or connector at the selector module open
- PossibleSensor 2 in the selector faulty
- Less likelySpilled liquid in the centre console
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Gear lever position sensorElectronic shift moduleSensor wiringEngine control module
What each part of P089A 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. |
| 9A | The exact fault in that area. |
What to do next
- Note P089A 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 P089A
What does P089A mean?
P089A means "Gear Lever X Position Sensor 2 Circuit". Gear lever position sensor 2 is the redundant second sensor of an electronic selector lever, next to sensor 1 (P0821 ff), for the X or Y axis. It is a generic code, so it means the same on every make.
Is it safe to drive with P089A?
Drive gently and only to a workshop. With P089A the car can go into limp mode (reduced power) to protect itself.
Will P089A fail an emissions test?
P089A is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P089A to fix?
Difficulty: medium. A typical repair takes 1 to 2 hours of work. This is a job for a workshop.
Will P089A 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.