P0A89 Possible Causes
- Faulty 14-volt power module current sensor
- 14-volt power module current sensor harness is open or shorted
- Poor electrical connection in 14-volt power module current sensor circuit
What Does It Mean?
How to Fix Code P0A89
Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, ejected, or corroded connector pins.
P0A89 Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P0A89 Meaning
The engine control module (ECM) monitors the 14-volt power module current sensor. The ECM sets the OBDII code when the 14-volt power module current sensor does not meet factory specifications.
OBDII Code P0A89 – 14-volt Power Module Current Sensor Circuit High