1995 Ford Explorer 2D Utility, RWD, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Performance DTCS

DTC REFERENCE CHART

DTC Description Circuit Test/Step: KOEO Circuit Test/Step: KOER Circuit Test/Step: CONT.
No Code No Codes/Codes Not Listed QA1 QA1 QA1
111 System Pass Pass Pass Pass
112 Intake Air Temperature Sensor Circuit Low Input DA20 - DA90
113 Intake Air Temperature Sensor Circuit High Input DA10 - DA90
114 Intake Air Temperature Sensor Circuit Voltage Higher Or Lower Than Expected DA1 DA1 -
116 Engine Coolant Temperature Sensor Circuit Voltage Higher Or Lower Than Expected DA1 DA1 -
117 Engine Coolant Temperature Sensor Circuit Low Input DA20 - DA90
118 Engine Coolant Temperature Sensor Circuit High Input DA10 - DA90
121 Throttle Position Sensor Fault DH 2 DH 1 G 1
122 Throttle Position Sensor Circuit Low Input DH10 - DH94
123 Throttle Position Sensor Circuit High Input DH3 - DH90
124 Throttle Position Sensor Voltage Higher Than Expected - - G1
125 Throttle Position Sensor Voltage Lower Than Expected - - G1
126 Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Voltage Higher Or Lower Than Expected DF1 DF1 DF90
128 Manifold Absolute Pressure Sensor Vacuum Hose Damaged/Disconnected - - DF11
129 Insufficient Manifold Absolute Pressure/Mass Air Flow Change During Dynamic Response Test KOER - DC13 -
136 System Indicates Lean (Bank 2) - H1 -
137 System Indicates Rich (Bank 2) - H1 -
157 Mass Air Flow Sensor Circuit Low Input - - DC10
158 Mass Air Flow Sensor Circuit High Input DC22 - DC22
159 Mass Air Flow Sensor Circuit Voltage Higher Or Lower Than Expected DC1 DC1 -
167 Insufficient Throttle Position Change During Dynamic Response Test KOER - DH20 -
171 Fuel System At Adaptive Limits (Bank 1) - - H1
172 System Indicates Lean (Bank 1) - H1 H1
173 System Indicates Rich (Bank 1) - H1 H1
175 Fuel System At Adaptive Limits (Bank 2) - - H1
176 System Indicates Lean (Bank 2) - - H1
177 System Indicates Rich (Bank 2) - - H1
179 Fuel System At Lean Adaptive Limit At Part Throttle, System Rich (Bank 1) - - HA1
181 Fuel System At Rich Adaptive Limit At Part Throttle, System Lean (Bank 1) - - HA1
184 Mass Air Flow Sensor Voltage Higher Than Expected - - G7
185 Mass Air Flow Sensor Voltage Lower Than Expected - - G7
186 Injector Pulsewidth Higher Than Expected - - G9
187 Injector Pulsewidth Lower Than Expected - - G7
188 Fuel System At Lean Adaptive Limit At Part Throttle, System Rich (Bank 2) - - HA1
189 Fuel System At Rich Adaptive Limit At Part Throttle, System Lean (Bank 2) - - HA1
211 Profile Ignition Pickup Circuit Failure - - NC1
212 Loss Of Ignition Diagnostic Monitor Input To PCM/SPOUT Circuit Grounded - - NC3
213 SPOUT Circuit Open - PC1 -
214 Cylinder Identification Circuit Failure - - DR1
215 Coil 1 Primary Circuit Failure - - (1)
216 Coil 2 Primary Circuit Failure - - (1)
217 Coil 3 Primary Circuit Failure - - (1)
218 Loss Of Ignition Diagnostic Monitor Signal (Left Side) - - (1)
222 Loss Of Ignition Diagnostic Monitor Signal (Right Side) - - (1)
224 Coil 1/2/3/4 Primary Circuit Failure - - (1)
225 Knock Not Sensed During Dynamic Response Test - DG1 -
226 Ignition Diagnostic Monitor Signal Not Received NC2 - -
232 Coil 1/2/3/4 Primary Circuit Failure - - (1)
311 Secondary Air Injection System Inoperative During KOER - KC1 -
312 Secondary Air Injection Misdirected During KOER - KC1 -
313 Secondary Air Injection Not Bypassed During KOER - KC1 -
327 Exhaust Gas Recirculation (DPFE) Circuit Below Minimum Voltage DL1 DL22 DL90
328 Exhaust Gas Recirculation Closed Valve Voltage Lower Than Expected DN25 DN25 DN90
332 Insufficient Exhaust Gas Recirculation Flow Detected - DL30 DL90
334 Exhaust Gas Recirculation Closed Valve Voltage Higher Than Expected DN20 DN20 DN115
335 Exhaust Gas Recirculation Sensor Voltage Higher/Lower Than Expected DL8 - -
336 Exhaust Pressure High/Exhaust Gas Recirculation Circuit Voltage Higher Than Expected - DL50 DL90
337 Exhaust Gas Recirculation Circuit Above Maximum Voltage DL5 DL50 DL90
338 Engine Coolant Temperature Lower Than Expected - - DA100
339 Engine Coolant Temperature Higher Than Expected - - DA101
341 Octane Adjust Service Pin Open KP1 - -
411 Cannot Control RPM During KEOR Low RPM Check - KE15 -
412 Cannot Control RPM During KEOR High RPM Check - KE1 -
452
Aerostar Insufficient Input From Vehicle Speed Sensor To Powertrain Control Module - - DS1
Explorer Insufficient Input From Vehicle Speed Sensor To Powertrain Control Module - - DP1
511 Powertrain Control Module Read Only Memory Test Failure (KOEO) Replace PCM
512 Powertrain Control Module Keep Alive Memory Test Failure - - QB1
513 Powertrain Control Module Internal Voltage Failure (KOEO) QD1 QD1 QD1
522
With TR Sensors Vehicle Not In PARK Or NEUTRAL During KOEO TD1 - -
Without TR Sensors Vehicle Not In PARK Or NEUTRAL During KOEO TA1 - -
528 Clutch Pedal Position Switch Circuit Failure - - TA1
542 Fuel Pump Circuit Open - Powertrain Control Module To Motor Ground J10 - J90
543 Fuel Pump Circuit Open - Battery To Powertrain Control Module J20 - J93
551 Idle Air Control Circuit Failure KT1 - -
552 Secondary Air Injection Bypass Circuit Failure KC9 - -
553 Secondary Air Injection Diverter Circuit Failure KC9 - -
556 Fuel Pump Relay Primary Circuit Failure J1 - -
558 Exhaust Gas Recirculation Vacuum Regulator Circuit Failure DL11 - -
565
Aerostar Canister Purge Circuit Failure (Solenoid) KD6 - -
Explorer Canister Purge Circuit Failure (Valve) KB1 - -
566 3-4 Shift Solenoid Circuit Failure TC1 - -
569 Auxiliary Canister Purge Circuit Failure KD6 - -
617 1-2 Shift Error - - TG90
618 2-3 Shift Error - - TG90
619 3-4 Shift Error - - TG90
621 Shift Solenoid 1 Circuit Failure TC1 - -
622 Shift Solenoid 2 Circuit Failure TC1 - -
623 4X4 Low & Transmission Control Switch TB3 - -
624 Electronic Pressure Control Circuit Failure TC 10 - TG 90
625 Electronic Pressure Control Driver Open In Powertrain Control Module TC 10 - TG 90
626 Coast Clutch Solenoid Circuit Failure TC1 - -
627 Torque Converter Clutch Solenoid Circuit Failure TC1 - -
628 Excessive Converter Clutch Slippage - - TG90
629 Torque Converter Clutch Solenoid Circuit Failure TC 1 - TG 90
631 Transmission Control Indicator Lamp Circuit Failure TB3 - -
632 Transmission Control Switch Circuit Did Not Change States During KOER - TB 2 NA 2
633 4X4 Low Switch Closed During KOEO TB1 - -
634 Transmission Range Voltage Higher/Lower Than Expected TD 1 - TG 90
636 Transmission Fluid Temperature Higher/Lower Than Expected TE1 TE1 -
637 Transmission Fluid Temperature Sensor Circuit Above Maximum Voltage TE10 - TE90
638 Transmission Fluid Temperature Sensor Circuit Below Minimum Voltage TE20 - TE90
639 Insufficient Input From Vehicle Speed Sensor To Powertrain Control Module - TF1 TF90
641 Shift Solenoid 3 Circuit Failure TC1 - -
643 Coast Clutch Solenoid Circuit Failure TC20 - TC30
652 Torque Converter Clutch Solenoid Circuit Failure TC1 - -
654 Transmission Range Sensor Indicating Not In PARK During Self-Test TD1 - -
655 Transmission Range Sensor Indicating Not In NEUTRAL During Self-Test TD1 - -
656 Torque Converter Clutch Slippage - - TG 90
657 Transmission Fluid Temperature OverTemperature - - TE100
667 Transmission Range Circuit Voltage Below Minimum Voltage TD 1 TD 1 TG 90
668 Transmission Range Circuit Voltage Above Maximum Voltage TD 1 TD 1 TG 90
676 Transmission Fault (2) (2) (2)
677 Transmission Fault (2) (2) (2)
691
Aerostar 4X4 Low Switch Open Or Short Circuit - - TB1
Explorer 4X4 Low Switch Open Or Short Circuit - - TB10
692 Transmission State Does Not Match Calculated Ratio (2) (2) (2)
998 Hard Fault Present - FMEM Mode FMEM - -
(1) Refer to I - SYSTEM/ COMPONENT TESTS - EEC-IV (4.0L) article.
(2) Check transmission for mechanical problem.
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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.

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