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Service Code Reference Charts

NOTE: In addition to transmission fault codes, engine-related fault codes may be output during QUICK TEST  procedure. These fault codes pertain to engine performance and must be repaired first as engine performance will greatly affect transmission operation. For information and testing procedures of engine-related fault codes and components, see the appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section.
CODE REFERENCE CHART

Fault Code Code Definition Circuit Test
KOEO Codes
111 Pass Code N/A
116 ECT Voltage High/Low DA1
117 ECT Voltage Low DA20
118 ECT Voltage High DA10
121 TPS Voltage High/Low DH2
122 TPS Malfunction DH10
123 TPS Malfunction DH3
511 Replace PCM *****
513 Replace PCM *****
566 3/4 Solenoid Malfunction A1
629 TCC Circuit Failure C1
Continuous Memory Codes
111 Pass Code N/A
118 ECT Voltage High DA90
121 TPS Voltage High/Low G1
122 TPS Malfunction DH94
123 TPS Malfunction DH90
124 TPS Malfunction G1
125 TPS Malfunction G1
452 Insufficient VSS Input (1) DP1
511 Replace PCM *****
513 Replace PCM *****
536 BOO Switch Malfunction FD90
629 TCC Circuit Failure C1
KOER Codes
111 Pass Code N/A
116 ECT Voltage High/Low DA1
121 TPS Voltage High/Low DH1
167 TPS Malfunction DH20
511 Replace PCM *****
513 Replace PCM *****
536 BOO Switch Malfunction FD1
(1) On Aerostar models, perform CIRCUIT TEST DS1, for DTC 452.