89 F150 V8. Common problems associated with a Code 22?


Asked by jape70 Aug 06, 2020 at 08:32 PM about the 1989 Ford F-150 XLT Standard Cab LB

Question type: Maintenance & Repair

Situation: Turning over, not starting.

-Batt = 11.8V
-LPFP/HPFP/fuel filter check out.
-New rotor/cap, cables and plugs with 0.53 gap.
-Code 22 '1' 22 (Baro Pressure Out of Range)
Reference Voltage on the MAP Sensor on the VREF is 5.0
2.5 on the backprobe
Vacuum test indeterminate.

Changed MAP Sensor. She fired up immediately with strong idle. The moment
I 'slammed' closed the hood, it died.
Currently: Turns over, not starting. Performed wiggle tests and visual of the
harness; nothing obvious.


Also, what would be a lower-than-normal resistance?

1 Answer


The fact it was idling fine but killed when you slammed the hood would appear to indicate a wiring/connection problem. If she cranks, but does not start, all you can do is check fuel pressure when key is on/cranking along with spark at the plugs during cranking. Not a difficult procedure.

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