[SOLVED] P1628 Code: Engine Control Temperature Resistor – Causes And Fixes

The automobile fault code P1628 indicates a problem with the Engine Control Temperature Pullup Resistor.

This can cause the Engine Light to turn on or the Service Engine Soon Warning Light to illuminate. The possible causes include a faulty resistor, an open or shorted harness, or a poor electrical connection in the circuit.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this problem is estimated to be around 1.0 hour.

It is important to address this issue promptly to prevent further damage to the engine.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1628 fault code.

  • The symptoms of the automobile fault code P1628 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The fault code p1628 can be caused by a faulty engine control temperature pullup resistor, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P1628 can be caused by the following: 1.
  • Faulty Engine Control Temperature Pullup Resistor.
  • 2.
  • Engine Control Temperature Pullup Resistor harness is open or shorted.
  • 3.
  • Engine Control Temperature Pullup Resistor circuit has a poor electrical connection.

To fix the p1628 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1628, you need to follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code p1628 are the estimated repair time of 1.0 hour and the average hourly rate charged by auto repair shops, which ranges between $75 and $150.

When you start your car with a cold engine, the Powertrain Control Module (PCM) may detect a problem with the PCM pullup resistor. This resistor is responsible for adjusting the Engine Control Temperature (ECT) resolution during engine operation. The fault code associated with this issue is P1628.

It specifically refers to a problem with the Powertrain Control Module Engine Control Temperature Pullup R. If you encounter this fault code, it’s important to address it promptly to ensure optimal engine performance.

What are the possible causes of fault code P1628 and how can they be identified?

If you’re seeing the engine light or service engine soon warning light, fault code P1628 might be the culprit. This code can be caused by a faulty engine control temperature pullup resistor, an open or shorted harness, or a poor electrical connection in the engine control temperature pullup resistor circuit. To identify the exact cause, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors to fix fault code P1628?

If you’re dealing with fault code P1628 and your engine light is on, it’s time to visually inspect the wiring harness and connectors. This fault code can be caused by a faulty engine control temperature pullup resistor, an open or shorted harness, or a poor electrical connection. To fix it, check for any damaged components and look closely for broken, bent, pushed out, or corroded pins in the connectors. Don’t forget to examine the wiring harness as well.

What should I look for when checking for damaged components and connector’s pins to resolve fault code P1628?

When resolving fault code P1628, start by checking for damaged components and connector’s pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any broken, bent, pushed out, or corroded pins. By doing so, you can identify any issues with the Engine Control Temperature Pullup Resistor or its circuit. This will help you address the cause of the problem and fix it effectively.

p1628 error fault code explained

If your engine light is on and you’re seeing the P1628 fault code, it could be due to a faulty engine control temperature pullup resistor or issues with the wiring harness and connectors.

To fix it, visually inspect the wiring and connectors for any damage, and check for broken or corroded pins.

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