LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 1995 >> Grand Marquis LS, AODE-W >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Automatic Transmission DTCS
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Automatic Transmission DTCS

AUTOMATIC TRANSMISSION DTCS (EEC-IV)

Fault Code (1) Circuit/Pinpoint Test & Step Code Definition
No Code/Code Not Listed (2) N/A
111 N/A Pass Code
112 (2) IAT Indicates 254° F (125° C)
113 (2) IAT Indicates -40° F (-40° C)
114 (2) IAT Out Of Range
116 (2) ECT Out Of Range
117 (2) ECT Indicates 254° F (125° C)
118 (2) ECT Indicates -40° F (-40° C)
121 (2) TPS Voltage High/Low
122 (2) TPS Malfunction
123 (2) TPS Malfunction
124 (2) TPS Malfunction
125 (2) TPS Malfunction
157 (2) MAF Sensor Malfunction
158 (2) MAF Sensor Malfunction
159 (2) MAF Sensor Malfunction
167 (2) TPS Malfunction
184 (2) MAF Sensor Malfunction
185 (2) MAF Sensor Malfunction
211 (2) EI System Malfunction
212 (2) EI System Malfunction
213 (2) EI System Malfunction
214 (2) EI System Malfunction
215 (2) EI System Malfunction
216 (2) EI System Malfunction
217 (2) EI System Malfunction
218 (2) EI System Malfunction
219 (2) EI System Malfunction
221 (2) EI System Malfunction
222 (2) EI System Malfunction
223 (2) EI System Malfunction
224 (2) EI System Malfunction
232 (2) EI System Malfunction
233 (2) EI System Malfunction
234 (2) EI System Malfunction
235 (2) EI System Malfunction
236 (2) EI System Malfunction
237 (2) EI System Malfunction
238 (2) EI System Malfunction
239 (2) EI System Malfunction
241 (2) EI System Malfunction
242 (2) EI System Malfunction
243 (2) EI System Malfunction
452 (2) Insufficient VSS Input
519 (2) PSP Circuit Failure
521 (2) PSP Not Changing State
536 (3)FD1 /(4) FD90 BOO Switch Malfunction
539 KM40 A/C Switch Error
617 A1 1-2 Shift Error
618 A1 2-3 Shift Error
619 A1 3-4 Shift Error
621 A1 SS1 Solenoid Circuit Failure
622 A1 SS2 Solenoid Circuit Failure
623 TB3 TCIL Circuit Failure
624 E1 EPC Solenoid Circuit Failure
625 E1 Open PCM Output Driver
628 (4) TG90 TCC Engagement Error
632 TB2 TCS Malfunction
633 (2) 4WD Low Switch Failure
636 B1 TFT Out Of Range
637 B1 TFT Indicates -40° F (-40° C)
638 B1 TFT Indicates 315° F (157° C)
639 F1 Insufficient Input From OSS
645 (4)TG90 /A1 No 1st Gear
646 (4)TG90 /A1 No 2nd Gear
647 (4)TG90 /A1 No 3rd Gear
648 (4)TG90 /A1 No 4th Gear
652 C1 TCC Circuit Failure
654 D1 TR Not In Park
656 C1 Excessive Slip
657 B1 Transmission Overtemp
659 D1 TR Always In Park
667 D1 TR Sensor Voltage Low
668 D1 TR Sensor Voltage High
675 D1 TR Voltage Out Of Range
691 (2) 4WD Low Circuit Failure
998 (2) FMEM Failure
(1) Only engine performance fault codes that may affect transmission operation are listed. For complete list of engine performance fault codes, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
(2) See appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
(3) KOER fault code.
(4) Continuous memory code.
AUTOMATIC TRANSMISSION DTCS (EEC-V)

Fault Code (1) Circuit/Pinpoint Test/Step Code Definition
P1111 N/A System Pass Code
P0102 (2) MAF Sensor Malfunction
P0103 (2) MAF Sensor Malfunction
P0112 (2) IAT Indicates 254° F (125° C)
P0113 (2) IAT Indicates -40° F (-40° C)
P0114 (2) IAT Out Of Range
P0117 (2) ECT Indicates 254° F (125° C)
P0118 (2) ECT Indicates -40° F (-40° C)
P0122 (2) TPS Malfunction
P0123 (2) TPS Malfunction
P0300 (2) EI System Malfunction
P0301 (2) EI System Malfunction
P0302 (2) EI System Malfunction
P0303 (2) EI System Malfunction
P0304 (2) EI System Malfunction
P0305 (2) EI System Malfunction
P0306 (2) EI System Malfunction
P0307 (2) EI System Malfunction
P0308 (2) EI System Malfunction
P0320 (2) EI System Malfunction
P0340 (2) EI System Malfunction
P0500 (2) Insufficient VSS Input
P0503 (2) Insufficient VSS Input
P0703 (3)FD3 BOO Switch Malfunction
P0707 D1 TR Sensor Voltage Low
P0708 D1 TR Sensor Voltage High
P0712 B1 TFT Indicates 315° F (157° C)
P0713 B1 TFT Indicates -40° F (-40° C)
P0720 F1 Insufficient Input From OSS
P0721 F1 Insufficient Input From OSS
P0741 (4) TCC Engagement Error
P0743 C1 TCC Solenoid Circuit Failure
P0750 A1 SS1 Solenoid Circuit Failure
P0751 A1 SS1 Solenoid Failure
P0755 A1 SS2 Solenoid Circuit Failure
P0756 A1 SS2 Solenoid Failure
P0781 A1 1-2 Shift Error
P0782 A1 2-3 Shift Error
P0783 A1 3-4 Shift Error
P1000 (5) Monitor Testing Incomplete
P1100 (2) MAF Sensor Malfunction
P1101 (2) MAF Sensor Malfunction
P1116 (2) ECT Out Of Range
P1120 (2) TPS Malfunction
P1121 (2) TPS Malfunction
P1124 (2) TP Voltage High/Low
P1125 (2) TPS Malfunction
P1351 (2) EI System Malfunction
P1352 (2) EI System Malfunction
P1353 (2) EI System Malfunction
P1354 (2) EI System Malfunction
P1355 (2) EI System Malfunction
P1359 (2) EI System Malfunction
P1364 (2) EI System Malfunction
P1460 (6)KM1 /(3)KM30 A/C Switch Error
P1500 (2) Intermittent VSS Input
P1501 (2) Intermittent VSS Input
P1503 (2) Insufficient VSS Input
P1703 (7)FD1 /(8)FD2 BOO Switch Malfunction
P1705 D1 TR Not In Park
P1711 B1 TFT Out Of Range
P1729 (2) 4WD Low Switch Failure
P1731 A1 1-2 Shift Error
P1732 A1 2-3 Shift Error
P1733 A1 3-4 Shift Error
P1741 C1 TCC Engagement Error
P1742 C1 TCC Solenoid Failed On
P1743 C1 TCC Solenoid Failed On
P1744 (4) TCC Engagement Error
P1746 E1 EPC Solenoid Circuit Failure
P1747 E1 EPC Solenoid Circuit Failure
P1751 A1 SS1 Solenoid Failure
P1756 A1 SS2 Solenoid Failure
P1780 (7)(2) TCS Malfunction
P1781 (2) 4WD Low Switch Closed
P1783 B1 Transmission Overtemp
(1) Only engine performance fault codes that may affect transmission operation are listed. For complete list of engine performance fault codes, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
(2) See appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
(3) Continuous memory code.
(4) See TROUBLESHOOTING in AUTO TRANS OVERHAUL - FORD 4R70W article.
(5) During KOEO and KOER self-tests disregard DTC P1000 and continue testing. For Continuous Memory DTC P1000, see READING CODES.
(6) KOER or KOER fault code.
(7) KOER fault code.
(8) KOEO memory code.