2001 accord P0128 code

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Jan 28, 2018 | 02:41 PM

emtdivr7

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2001 accord P0128 code

my 2001 4 cyl ck eng lite is on showing Code P0128 coolant/thermostat. I replaced thermostat and 2 sensors and light comes on again. any suggestions?

Jan 28, 2018 | 08:10 PM

2001GSRSC

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From: Chicagoland 708

Re: 2001 accord P0128 code

Thermostat under the outlet has no connector to the ecm. The water outlet has the CTS.

2 sensors? The coolant temp sensor(but not a 0128)? Fan switch? When you ohm it out what are you getting?

There could be an open in the harness wires. Make sure the fans are operating properly. That the radiator is not clogged up, and has proper level coolant with overflow reservoir in closed system.

Last edited by 2001GSRSC; Jan 28, 2018 at 08:35 PM.

Jan 28, 2018 | 11:02 PM

holmesnmanny

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Re: 2001 accord P0128 code

underneath the distributor is a two pin sensor, test it for ohms when the car is completely cold, it should be between 2000-3000 ohms. Test it again after warming the car completely up. Should now be 150-250 ohms or so