Questions and Answers

Dodge Ram Multiple Diagnostic Codes Q. Errors found include barometer sensor out of range, temperature sensor out of range, -45° F, engine position sensor fault, intake air temperature out of range, -45° F, computer says voltage is 18.5V but when tested at battery is actually 14.5V and a few others. The vehicle runs good, but only gets about 15 miles to the gallon and is hard to start, especially when cold, rich fuel condition.

After cleaning throttle body, replacing computer coolant temperature sensor and running redundant grounds errors still exist. ECM?

• 1993 Dodge Ram 50/D50
• 2.4 liter SOHC
• manual transmission
• 130,000 miles

A. With multiple codes referring to different, unrelated, systems I would suspect a bad PCM also.