Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
Table of contents
P1628 BUICK Possible Causes
- Faulty Engine Control Temperature Pullup Resistor
- Engine Control Temperature Pullup Resistor harness is open or shorted
- Engine Control Temperature Pullup Resistor circuit poor electrical connection
How do I fix code P1628 BUICK?
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 P1628 BUICK code
The cost of diagnosing the P1628 BUICK 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)
P1628 BUICK Description
With the cold engine startup, the Powertrain Control Module (PCM) detects a fault in the PCM pullup resistor used to revise Engine Control Temperature (ECT) resolution in engine operation.