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.
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HOMESERVICE MANUALSFORD1993PICKUP F250, 2D PICKUP, 5.0 N, STANDARD, M5OD-R2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 5 (ENGINE CONTROLS - TESTS W/CODES - EEC-IV)SERVICE CODE DEFINITION CHARTS
1993 Ford Pickup F250, 2D Pickup, 5.0 N, Standard, M5OD-R2
Service Code Definition Charts
1993 Ford Pickup F250, 2D Pickup, 5.0 N, Standard, M5OD-R2SECTION Service Code Definition Charts
WARNING: This page is about a different car, the 1994 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
2-DIGIT SERVICE CODE DEFINITION CHART
| DTC(1) | Diagnostic Trouble Code Definition | ||
|---|---|---|---|
| 11 orc | System PASS | ||
| 14 c | Engine Rpm (RPM) Sensor Circuit Fault (Diesel) | ||
| 15 o | PCM Read Only Memory (ROM) Test Failed | ||
| 15 c | PCM Keep Alive Memory (KAM) Test Failed | ||
| 19 o | Failure In PCM Internal Voltage | ||
| 22 orc | BARO Sensor Out Of Self-Test Range (Diesel) | ||
| 23 orc | Throttle Position (TP) Sensor Out Of Self-Test Range | ||
| 26 or | Transmission Oil Temp (TOT) Out Of Self-Test Range | ||
| 29 c | Insufficient Input From Programmable Speedometer/ Odometer Module (PSOM) | ||
| 33 c | Throttle Position (TP) Sensor Noisy, Harsh On Line (Diesel) | ||
| 43 c | Throttle Position (TP) Sensor Below Idle Spec | ||
| 47 o | 4 x 4 Switch Is Closed | ||
| 49 c | 1-2 Shift Error | ||
| 53 oc | TP Above Maximum Voltage | ||
| 56 oc | Transmission Oil Temp (TOT) Indicated -40°C (-40°F) Circuit Open | ||
| 59 c | 2-3 Shift Error | ||
| 62 c | Torque Converter Clutch Error | ||
| 63 oc | TP Circuit Below Minimum Voltage | ||
| 65 r | Transmission Control Switch (TCS) Circuit Did Not Change States | ||
| 66 oc | Transmission Oil Temp. (TOT) Indicated 143°C(290°F) /Circuit Grounded | ||
| 67 oc | Manual Lever Position (MLP) Sensor Out Of Range; A/C/ ON | ||
| 68 c | Transmission Oil Temp (TOT) Transmission Over Temp (Over-Heated) (Diesel) | ||
| 69 c | 3-4 Shift Error | ||
| 74 rc | Brake On/Off (BOO) Circuit Open - Not Actuated | ||
| 91 o | Shift Solenoid 1 (SS1) Circuit Failure | ||
| 92 o | Shift Solenoid 2 (SS2) Circuit Failure | ||
| 93 o | Coast Clutch Solenoid (CCS) Circuit Failure | ||
| 94 o | Torque Converter Clutch (TCC) Solenoid Circuit Failure | ||
| 97 o | Transmission Control Indicator Lamp (TCIL) Circuit Failure | ||
| 98 r | Hard Fault Present | ||
| 98 o | Electronic Pressure Control (EPC) Driver Open In PCM (Diesel) | ||
| 99 oc | Electronic Pressure Control (EPC) Circuit Failure | ||
| DTCS | Unable To Self-Test Or Unable To Output To DTCs | ||
| DTCs Not Listed | DTCs Being Displayed Are Not Applicable To The Vehicle Being Tested | ||
|
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3-DIGIT SERVICE CODE DEFINITION CHART
| DTC | Diagnostic Trouble Code Definition |
|---|---|
| 111 | System Pass |
| 112 | Intake Air Temp. (IAT) Sensor Circuit Below Minimum Voltage/254°F Indicated |
| 113 | Intake Air Temp. (IAT) Sensor Circuit Above Maximum Voltage/-40°F Indicated |
| 114 | Intake Air Temp. (IAT) Higher Or Lower Than Expected |
| 116 | Engine Coolant Temp. (ECT) Higher Or Lower Than Expected |
| 117 | Engine Coolant Temp. (ECT) Sensor Circuit Below Minimum Voltage/254°F Indicated |
| 118 | Engine Coolant Temp. (ECT) Sensor Circuit Above Maximum Voltage/-40°F Indicated |
| 121 | Closed Throttle Voltage Higher Or Lower Than Expected |
| 121 | Indicates Throttle Position Voltage Inconsistent With The MAF Sensor |
| 122 | Throttle Position (TP) Sensor Circuit Below Minimum Voltage |
| 123 | Throttle Position (TP) Sensor Circuit Above Maximum Voltage |
| 124 | Throttle Position (TP) Sensor Voltage Higher Than Expected |
| 125 | Throttle Position (TP) Sensor Voltage Lower Than Expected |
| 126 | MAP/BARO Sensor Higher Or Lower Than Expected |
| 128 | MAP Sensor Vacuum Hose Damaged/Disconnected |
| 129 | Insufficient MAP/Mass Air Flow (MAF) Change During Dynamic Response Test KOER |
| 136 | System Indicates Lean (Bank #2) |
| 137 | System Indicates Rich (Bank #2) (KOER) |
| 157 | Mass Air Flow (MAF) Sensor Circuit Below Minimum Voltage |
| 158 | Mass Air Flow (MAF) Sensor Circuit Above Maximum Voltage |
| 159 | Mass Air Flow (MAF) Higher Or Lower Than Expected |
| 167 | Insufficient Throttle Position Change During Dynamic Response Test |
| 171 | Fuel System At Adaptive Limits (Bank #1) |
| 172 | System Indicates Lean (Bank #1) |
| 173 | System Indicates Rich (Bank #1) |
| 175 | Fuel System At Adaptive Limits (Bank #2) |
| 176 | System Indicates Lean (Bank #2) |
| 177 | System Indicates Rich (Bank #2) |
| 179 | Fuel System At Lean Adaptive Limit At Part Throttle, System Rich (Bank #1) |
| 181 | Fuel System At Rich Adaptive Limit At Part Throttle, System Lean (Bank #1) |
| 184 | Mass Air Flow (MAF) Higher Than Expected |
| 185 | Mass Air Flow (MAF) Lower Than Expected |
| 186 | Injector Pulse Width Higher Than Expected (With BARO Sensor) |
| 186 | Injector Pulse Width Higher Or MAF Lower Than Expected (Without BARO Sensor) |
| 187 | Injector Pulse Width Lower Than Expected (With BARO Sensor) |
| 187 | Injector Pulse Width Lower Or MAF Higher Than Expected (Without BARO Sensor) |
| 188 | Fuel System At Lean Adaptive Limit At Part Throttle, System Rich (Bank #2) |
| 189 | Fuel System At Rich Adaptive Limit At Part Throttle, System Lean (Bank #2) |
| 211 | Profile Ignition Pickup (PIP) Circuit Failure |
| 212 | Loss Of Ignition Diagnostic Monitor (IDM) Input To PCM/SPOUT Circuit Grounded |
| 213 | SPOUT Circuit Open |
| 214 | Cylinder Identification (CID) Circuit Failure |
| 215 | Pcm Detected Coil 1 Primary Circuit Failure (Ei) |
| 216 | pcm Detected Coil 2 Primary Circuit Failure (EI) |
| 217 | PCM Detected Coil 3 Primary Circuit Failure (EI) |
| 218 | Loss Of Ignition Diagnostic Motor (IDM) Signal - Left Side (Dual Plug EI) |
| 222 | Loss Of Ignition Diagnostic Motor (IDM) Signal - Right Side (Dual Plug EI) |
| 223 | Loss Of Dual Plug Inhibit (DPI) Control (Dual Plug EI) |
| 224 | PCM Detected 1, 2, 3 Or 4 Primary Circuit Failure (Dual Plug EI) |
| 225 | Knock Not Sensed During Dynamic Response Test KOER |
| 226 | Ignition Diagnostic Monitor (IDM) Signal Not Received (EI) |
| 232 | PCM Detected 1, 2, 3 Or 4 Primary Circuit Failure (EI) |
| 311 | Secondary Air Injection (AIR) System Inoperative During KOER (Bank #1 W/Dual HO2S) |
| 312 | Secondary Air Injection (AIR) Misdirected During KOER |
| 313 | Secondary Air Injection (AIR) Not Bypassed During KOER |
| 327 | EGR (EVP/PFE/DPFE) Circuit Below Minimum Voltage |
| 328 | EGR (EVP) Closed Valve Voltage Lower Than Expected |
| 332 | Insufficient EGR Flow Detected |
| 334 | EGR (EVP) Closed Valve Voltage Higher Than Expected |
| 335 | EGR(PFE) Sensor Voltage Lower Than Expected During KOEO |
| 336 | Exhaust Pressure High/EGR (PFE) Circuit Voltage Higher Than Expected |
| 337 | EGR(EVP/PFE) Circuit Above Maximum Voltage |
| 341 | Octane Adjust Service Pin Open |
| 411 | Cannot Control RPM During KOER Low RPM Check |
| 412 | Cannot Control RPM During KOER High RPM Check |
| 452 | Insufficient Input From Vehicle Speed Sensor (VSS) To Powertrain Control Module (PCM) |
| 511 | PCM Read Only Memory (ROM) Test Failure KOEO |
| 512 | PCM Keep Alive Memory (KAM) Test Failure |
| 513 | PCM Internal Voltage Failure (KOEO) |
| 519 | Power Steering Pressure (PSP) Switch Circuit Open KOEO |
| 521 | Power Steering Pressure (PSP) Switch Circuit Did Not Change States KOER |
| 522 | Vehicle Not In PARK Or NEUTRAL During KOEO (%) |
| 528 | Clutch Pedal Position (CPP) Switch Circuit Failure |
| 536 | Brake On/Off (BOO) Circuit Failure/Not Actuated During KOER |
| 538 | Insufficient RPM Change During KOER Dynamic Response Test |
| 538 | Invalid Cylinder Balance Test Due To Throttle Movement During Test |
| 538 | Invalid Cylinder Balance Test Due To CID Circuit Failure |
| 539 | A/C On/Defrost On During KOEO |
| 542 | Fuel Pump Circuit Open - PCM To Motor Ground |
| 543 | Fuel Pump Circuit Open - Battery To Powertrain Control Module (PCM) |
| 551 | Idle Air Control (IAC) Circuit Failure KOEO |
| 552 | Secondary Air Injection Bypass (AIRB) Circuit Failure KOEO |
| 553 | Secondary Air Injection Diverter (AIRD) Circuit Failure KOEO |
| 556 | Fuel Pump Relay Primary Circuit Failure |
| 558 | EGR Vacuum Regulator (EVR) Circuit Failure |
| 565 | Canister Purge (CANP) Circuit Failure KOEO |
| 566 | 3-4 Shift Solenoid Circuit Failure KOEO (A4LD) |
| 569 | Auxiliary Canister Purge (AUX-CANP) Circuit Failure |
| 617 | 1-2 Shift Error |
| 618 | 2-3 Shift Error |
| 619 | 3-4 Shift Error |
| 621 | Shift Solenoid 1 (SS1) Circuit Failure KOEO |
| 622 | Shift Solenoid 2 (SS2) Circuit Failure KOEO |
| 624 | Electronic Pressure Control (ECP) Circuit Failure |
| 625 | Electronic Pressure Control (ECP) Driver Open In PCM |
| 626 | Coast Clutch Solenoid (CCS) Circuit Failure KOEO |
| 628 | Excessive Torque Converter Clutch Slippage |
| 629 | Torque Converter Clutch (TCC) solenoid circuit failure |
| 631 | Transmission Control Indicator Lamp (TCIL) Circuit Failure KOEO |
| 632 | Transmission Control Switch (TCS) Circuit Did Not Change States During KOER |
| 633 | 4 x 4L Switch Closed During KOEO |
| 634 | Manual Lever Position (MLP) Voltage Higher Or Lower Than Expected |
| 636 | Transmission Oil Temp (TOT) Higher Or Lower Than Expected |
| 637 | Transmission Oil Temp (TOT) Sensor Circuit Above Maximum Voltage/-40°F Indicated |
| 638 | Transmission Oil Temp (TOT) Sensor Circuit Below Minimum Voltage/ 290°F Indicated |
| 639 | Insufficient Input From Transmission Speed Sensor |
| 654 | Manual Lever Position (MLP) Sensor Indicating Not In PARK During Self-Test |
| 655 | Manual Lever Position (MLP) Sensor Indicating Not In NEUTRAL During Self-Test |
| 656 | Torque Converter Clutch Slippage Error |
| 668 | Manual Lever Position (MLP) Circuit Voltage Above Maximum Voltage |
| 998 | Hard Fault Present - FMEM MODE |
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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.