Code Help
Thread Starter
|
New User
Joined: Oct 2010
Posts: 22
Likes: 0
Code Help
Hi I just bought a 1993 f350 7.5 with e40d. It has 155000 km (canadian truck) It has four codes. The book tells me what they are but I dont know where to start fixin. Codes are 56 O 31 O 91 O 94 O Any help please. And where are theses sensors. 
Cargo Master
Joined: Jul 2009
Posts: 2,538
Likes: 54
From: Des Moines
According to my chiltons manual, definitions are:
56: VAF or MAF circuit above maximum voltage - Could indicate a bad Mass Air Flow sensor.
31: PFE, EVP or EVR circuit below minimum voltage - Can't remember what PFE is, but EVP [EGR valve position sensor] and EVR [EGR vacuum regulator] could be going bad.
91: Shift solenoid 1 circuit failure [E40D]: No idea, I'm not experienced with tranny codes
94: Converter clutch solenoid circuit failure [E40D]: Again, no idea.
56: VAF or MAF circuit above maximum voltage - Could indicate a bad Mass Air Flow sensor.
31: PFE, EVP or EVR circuit below minimum voltage - Can't remember what PFE is, but EVP [EGR valve position sensor] and EVR [EGR vacuum regulator] could be going bad.
91: Shift solenoid 1 circuit failure [E40D]: No idea, I'm not experienced with tranny codes
94: Converter clutch solenoid circuit failure [E40D]: Again, no idea.
