Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
KOER Code-To-Test Menu - 7.5L (3-Digit Codes)
1991 Ford Cutaway 5.8 H, C6SECTION KOER Code-To-Test Menu - 7.5L (3-Digit Codes)
KOER SELF-TEST - CIRCUIT TEST & STEP MENU
| Code No. | Go To: Test No. (Step No.) |
|---|---|
| 114 | DA (1) |
| 116 | DA (1) |
| 121 | DH (1) |
| 129 | DF (10) |
| 136 | H (1) |
| 137 | H (1) |
| 167 | DH (20) |
| 172 | H (1) |
| 173 | H (1) |
| 213 | PA (1) |
| 311 | KC (1) |
| 312 | KC (1) |
| 313 | KC (1) |
| 327 | DN (1) |
| 328 | DN (25) |
| 332 | DN (40) |
| 334 | DN (50) |
| 337 | DN (5) |
| 411 | KE (15) |
| 412 | KE (1) |
| 536 | FD (1) |
| 538 | M (1) |
| 632 | TC (5) |
| 636 | TC (21) |
| 998 | Go to QUICK TEST. |
| No Codes/Codes Not Listed | QA (1) |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.