Starter/Generator Inverter Phase U Temperature Sensor Performance
Table of contents
P1A9B CHEVROLET Possible Causes
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module (SGCM) harness is open or shorted
- Starter/Generator Control Module (SGCM) circuit poor electrical connection
How do I fix code P1A9B CHEVROLET?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1A9B CHEVROLET code
The cost of diagnosing the P1A9B CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1A9B CHEVROLET Description
The Power Inverter Module (PIM) temperature 1 sensor is used for overheat protection. The thermistor is located on the control board, near the phase W power MOSFET. The Starter/Generator Control Module (SGCM) monitors the inverter temperature sensor to detect the failure of the inverter temperature sensor circuit using rationality of other temperature sensors to determine if it is out of range.