what is the code 128 for a 2001 chevrolet impala

Question

There are four warning lights that won't go away; 128, 341,420 and 7421. The 2001 impala has 254,000 miles, a rebuilt transmission with 12,000 miles since replaced, a Catalytic Converter with 30,000 miles since replaced. The car does not leak antifreeze (that I can tell), nor does it burn an unusual amount of oil.

Can you help me?

Thank you.

Steve Vida

Answer 1

You should erase all the codes and try fixing the codes that come back one by one.

P0128 Chevrolet - Engine Coolant Temperature Below Thermostat Regulating Temperature

Read more: https://www.autocodes.com/p0128_chevrolet.html

P0341 Chevrolet - Camshaft Position Sensor 'A' Circuit Range/Performance

Read more: https://www.autocodes.com/p0341_chevrolet.html