P1628
Powertrain Control Module Engine Control Temperature Pullup Resistor Conditions
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Check Engine Light Illuminates
- Problems starting the engine
- Reduced engine power
Causes
- Pull-up resistor failure
- Open or short circuit in the circuit
- Wiring harness damage
- Engine control module (ECM) malfunction
- Poor contact in connectors
How to Fix
- Check the integrity of the pull-up resistor
- Check the condition of the circuit for open circuit and short circuit
- Inspect the wiring harness for damage
- Check contacts in ECM connectors
- Replace ECM if necessary