Truck throwing lots of codes?

Asked by Austin_c_davis Apr 04, 2024 at 10:28 PM about the 1993 Ford F-150 XLT 4WD LB

Question type: Maintenance & Repair

I've got a 93 f-150 351w, 5.8 30,XXX miles, I Pulled all if the Key on, Engine
off, codes, all of them are circuit failures, or something not receiving enough
volts. Ill list them at the end, Not sure if its going to be a bad computer, bad
ground contact, Just looking for something to go off of. Thank you in advance,
All help is appreciated..........


OBD1 Codes


117-ECT single sensor below the voltage of .2 Volts
638-TOT sensor circuit below minimum voltage
126-map/Bp sensor out of test range range 1.4-1.6
122-TPS circuit below a minimum of 6 volts.
112-ACT sensor is less than the self-test minimum of .2 volts
327-DPFE or EVP below a minimum of .2 volts
654-MLP sensor not in park
513-failure in EECprossesor internal voltage
553-Air management 2 circuit failure
552-Air management 1 circuit failure
565-Canister purge circuit failure
556-Fuel pump circuit failure
558-EGR vacuum regulator failure
621-Shift solenoid #1 circuit one failure
622-Shift solenoid #2 circuit one failure
631-Overdrive light circuit failure
629-converter clutch control circuit failure
626-Coast clutch solenoid circuit failure
624-Electronic pressure control solenoid or driver circuit

3 Answers
38,925

beatupchevy answered 3 weeks ago

You need a technician , unfortunately most mechanics like plug and play fixes , To find one that truly trouble shoots may be difficult

Mark helpful
307,235

Gene answered 3 weeks ago

That’s right and to find one that is old Ford OBD 1 proficient could prove to be difficult as most of the good ones from that era have retired and don’t want anything to do with working on cars anymore. I can say this however, stay away from the dealership.

Mark helpful

Your Answer:

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