I'm getting two codes: P0128 and P0442

WIN-ALDL, PROM BURNING, ERROR CODES, RPO CODES, SES LIGHT, CHECK ENGINE LIGHT, VIN INFO, FACTORY INSTALLED OPTIONS LIST
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Topic author
kkamakasi
I am smitten with my van
Posts: 38
Joined: Wed Dec 01, 2010 9:11 pm

I'm getting two codes: P0128 and P0442

Post by kkamakasi »

After doing some reading, P0128 seems to refer to a faulty thermostat.

But I can't seem to get an answer for p0442. Code Scanner calls the code "EVAP System Small Leak".

Someone care to explain a way to rectify the problem?

LiftedAWDAstro
I have my van tatooed on my cheeks
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Location: New Haven, NY

Re: I'm getting two codes: P0128 and P0442

Post by LiftedAWDAstro »

The small evap leak can be simply the gas cap. The P0128 code is for low coolant temp. This could be a bad sensor or a faulty t-stat. If the t-stat and coolant haven't been changed, I would start there.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy

Topic author
kkamakasi
I am smitten with my van
Posts: 38
Joined: Wed Dec 01, 2010 9:11 pm

Re: I'm getting two codes: P0128 and P0442

Post by kkamakasi »

LiftedAWDAstro wrote:The small evap leak can be simply the gas cap. The P0128 code is for low coolant temp. This could be a bad sensor or a faulty t-stat. If the t-stat and coolant haven't been changed, I would start there.
I was planning on doing a cooling system overhaul so that SHOULD take care of P0128.

As for the other code, should I just replace the gas cap? What are the parameters for the car to throw this code? Is the gas tank dipping below a certain pressure point?

LiftedAWDAstro
I have my van tatooed on my cheeks
Posts: 4379
Joined: Sat Sep 09, 2006 3:35 pm
Location: New Haven, NY

Re: I'm getting two codes: P0128 and P0442

Post by LiftedAWDAstro »

I would clear the code and tighten the gas cap. If it comes back then replace the cap.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy

Topic author
kkamakasi
I am smitten with my van
Posts: 38
Joined: Wed Dec 01, 2010 9:11 pm

Re: I'm getting two codes: P0128 and P0442

Post by kkamakasi »

LiftedAWDAstro wrote:I would clear the code and tighten the gas cap. If it comes back then replace the cap.
:cheers:
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