Engine-Codes - Generic - P1628

P1628 Code - Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions

- Code Popularity: 33,685 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P1628?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P1628?

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 pins.

Search for P1628 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1628 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1628 Code Mean?

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.

P1628 Code - Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions

Need more Information on the Code?

Need more information on how to fix the P1628 code? Get Access to Factory Service Manuals

Code P1628 Information for Specific Makes

  • P1628 Buick Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
  • P1628 Cadillac Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
  • P1628 Chevrolet Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
  • P1628 Dodge Sensor Reference Voltage 2 Circuit Erratic
  • P1628 GMC Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
  • P1628 Hyundai Condenser Fan Circuit Low
  • P1628 Mazda ECM to ABS/TCS Communication Signal Error
  • P1628 RAM Sensor Reference Voltage 2 Circuit Erratic
  • P1628 Saab Battery Voltage Too Low / High

Need Help with the Code?

Get the P1628 code diagnosed by a professional: Find a repair shop in your area