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Ford Diagnostic Codes, Trouble Codes and Descriptions

WesTech Auto

Diagnostic Codes

Ford

Electronic Engine Control IV (EEC-IV)
Continuous Memory Codes
11 System Pass.
13 Idle Speed Control Motor did not move.
14 Profile Ignition Pickup (PIP) circuit erratic.
14 Engine speed Sensor circuit Fault (Diesel).
15 Keep Alive Memory power was lost while battery voltage present on other circuits.
18 Loss of Ignition Diagnostic Module Input to PCM/SPOUT - circuit grounded.
18 Spark Angle Word (SAW) circuit failure (1.9L SFI).
19 Cylinder Identification Sensor Input failure (3.0L SHO).
22 Manifold Absolute Pressure (MAP) Sensor circuit failure or out of range.
23 Throttle Position Sensor out of range.
27 Vehicle Speed Sensor (2.3L Turbo).
28 Loss of Ignition Diagnostic Module - right hand side.
29 Insufficient Input from Vehicle Speed Sensor (1992 and prior).
29 Insufficient Input from Programmable Speedometer/Odometer Module (1993 and above).
31 EGR Valve Position/Pressure Feedback EGR circuit below minimum voltage.
32 EGR Valve did not close completely (1.9L CFI, 2.9L & 3.0L SHO).
32 EGR Valve Position/Pressure Feedback EGR voltage below closed voltage (other vehicles).
33 EGR not Closing Properly (2.3L OHC & 3.8L CFI).
33 Throttle Position Sensor (Diesel).
33 EGR Valve did not open recently (other vehicles).
34 Defective EGR Pressure Transducer Sensor (1.9L CFI, 2.3L HSC EFI & 3.0L).
34 EGR Valve Position/Pressure Feedback EGR voltage above closed Limit (other vehicles).
35 EGR Valve Position/EGR Pressure Feedback. EGR circuit above maximum voltage (other vehicles).
38 DC Motor Idle Speed Control/Idle Tracking.
39 AXOD Converter Bypass Clutch not Applying Properly.
41 No Heated Oxygen Sensor Switching detected.
42 No Oxygen Sensor Switching detected.
43 Heated Oxygen Sensor Lean at Wide Open Throttle (1986-90 1.9L MFI).
43 Throttle Position Sensor below Idle Speed (Diesel).
45 Coil 1 Primary circuit failure (1990-91 1.9L EFI/SFI).
45 Distributorless Ignition System Coil Pack 3 circuit failure (3.0L SHO, 3.8L SC).
46 Coil 2 Primary circuit failure (1990-91 1.9L MFI/SFI).
46 Distributorless Ignition System Coil Pack 1 circuit failure (3.0L SHO, 3.8L SC).
48 Loss of Ignition Diagnostic Monitor - left hand side (2.3L).
48 Distributorless Ignition System Coil Pack 2 circuit failure (3.0L SHO, 3.8L SC).
49 Spark Output (SPOUT) Signal Default to 10 degrees BDTC (3.0L SHO, 3.8L SC).
49 1-2 Shift Error (other vehicles).
51 Engine Coolant Temperature circuit open.
53 Throttle Position Sensor circuit above maximum voltage.
53 Fuel Injector Pump Lever Sensor Input is Greater than self test (Diesel).
54 Intake Air Temperature/Air Charge Temperature circuit open.
56 Transmission Fluid Temperature circuit open.
56 Mass Air Flow/Vane Air Flow Sensor circuit above maximum voltage.
57 Transaxle Neutral Position Switch circuit failed open.
58 Vane Air Temperature Sensor Input Greater than self test maximum (EFI).
59 AXOD Neutral Position Switch circuit failed open (3.0L & 3.8L).
59 2-3 Shift Error (other vehicles).
59 Low Speed Fuel Pump circuit failure, Battery to PCM (3.0L SHO).
59 AXOD 4/3 Pressure Switch circuit failed open.
61 Engine Coolant Temperature Sensor circuit grounded.
62 Torque Converter Clutch Error.
63 Throttle Position Sensor circuit below minimum voltage.
63 Fuel Injection Pump Lever Sensor Input is less than self test minimum (Diesel).
64 Intake Air Temperature/Air Charge Temperature circuit grounded.
65 Fuel Control (2.3L Turbo).
66 Mass Air Flow Sensor circuit below minimum voltage (Except 1.9L MFI & 2.3L Turbo).
66 Vane Air Flow Sensor Input less than self test minimum (1.9L MFI & 2.3L Turbo).
66 Transmission Fluid Temperature circuit grounded (other vehicles).
67 Manual Lever Position Sensor out of Range - A/C on.
67 Clutch Switch circuit failure.
67 A/C Input High (2.5L TBI).
68 Vane Air Temperature Sensor Input less than self test minimum (1.9L MFI & 2.3L Turbo).
68 Transmission Fluid Temperature (Diesel).
69 3-4 Shift Error.
69 AXOD Neutral Position Switch failed open (3.0L).
69 AXOD 3/2 Pressure Switch failed closed (3.8L SFI).
70 EEC IV Data Transaxle circuit failed (3.8L SFI).
71 Idle Tracking Switch closed on Pre-Position (1.9L, 2.3L & 2.5L CFI).
71 Software Re-Initialization detected (1.9L EFI).
71 Cluster Center Control circuit failed (3.8L SFI).
72 Power Interrupt Software Re-Initialization detected (1.9L & 2.3L Turbo).
72 Message Center Control Assembly circuit failed (3.8L SFI).
74 Brake on/Off circuit did not change during self test.
83 Low Speed Fuel Pump Relay circuit open (3.0L SHO).
85 Adaptive Fuel Lean limit reached (1.9L EFI).
86 Adaptive Fuel Rich limit reached (1.9L EFI).
87 Primary Fuel Pump circuit failure.
88 Loss of Dual Plug Input Control.
91 No Heated Oxygen Sensor Switching detected.
95 Integrated Relay Control Module (2.5L HSC & 3.8L EFI).
95 Fuel Pump circuit open-PCM to Motor Ground (other vehicles).
96 Integrated Relay Control Module (2.5L HSC & 3.8L EFI).
96 High Speed Fuel Pump Relay circuit open (3.0L SHO).
96 Fuel Pump circuit open - Battery to PCM (other vehicles).
99 Electronic Pressure Control circuit failure.
111 System Pass.
112 Intake Air Temperature/Air Charge Temperature Sensor circuit below minimum voltage.
113 Intake Air Temperature/Air Charge Temperature Sensor circuit above maximum voltage.
117 Engine Coolant Temperature Sensor circuit below minimum voltage.
118 Engine Coolant Temperature Sensor circuit above maximum voltage.
121 Closed Throttle voltage Higher or Lower than Expected.
121 Indicates Throttle Position voltage Inconsistent with Mass Air Flow Sensor.
122 Throttle Position Sensor circuit below minimum voltage.
123 Throttle Position Sensor circuit above maximum voltage.
124 Throttle Position Sensor voltage Higher than Expected.
125 Throttle Position Sensor voltage Lower than Expected.
126 Manifold Absolute Pressure/Barometric Pressure Sensor Higher or Lower than Expected.
126 Cylinder Identification circuit failure (3.0L SHO).
128 Manifold Absolute Pressure Sensor Vacuum Hose Damaged/Disconnected.
139 No Heated Oxygen Sensor Switch detected.
144 No Heated Oxygen Sensor Switch detected.
157 Mass Air Flows Sensor circuit below minimum voltage.
158 Mass Air Flow Sensor circuit above maximum voltage.
171 Fuel System at Adaptive Limits.
171 No Heated Oxygen Sensor Switching detected.
172 Heated Oxygen Sensor System Indicates Lean.
174 Heated Oxygen Sensor Switching Time is Slow.
175 Fuel System at Adaptive Limits (Bank No. 2).
176 System Indicates Lean (Bank No. 2).
177 System Indicates Rich (Bank No. 2).
178 Heated Oxygen Sensor Switch Time is Slow (Bank No. 1).
179 Fuel System at Lean Adaptive Limit at Part Throttle, System Rich (1.9L, 2.0L, 2.3L HSC, 2.5L & 3.0L).
179 Fuel System Adaptive Lean Limit is Reached (4.6L, 4.9L, 5.0L, 5.8L, 7.0L & 7.5L).
179 Fuel System at Rich Adaptive Limit (other vehicles).
181 Fuel System at Rich Adaptive Limit at Part Throttle, System Lean (1.9L, 2.0L, 2.3L HSC, 2.5L & 3.0L).
181 Fuel System Adaptive Rich Limit is Reached (4.6L, 4.9L, 5.0L, 5.8L, 7.0L & 7.5L).
181 Fuel System at Lean Adaptive Limit (other vehicles).
182 Fuel System at Lean Adaptive Limit at Idle, System Rich (1.9L, 2.3L, 2.5L, 3.0L, 3.8L SC, 4.6L, 7.0L & 7.5L).
182 Fuel System at Lean Adaptive Limit (other vehicles).
183 Fuel System at Rich Adaptive Limit at Idle, System Lean (1.9L, 2.3L, 2.5L, 3.0L, 3.8L SC, 4.6L, 7.0L & 7.5L).
183 Fuel System at Rich Adaptive Limit (other vehicles).
184 Mass Air Flow Sensor circuit voltage Higher than Expected.
185 Mass Air Flow Sensor circuit voltage Lower than Expected.
186 Injector Pulse Width Higher than Expected (with BARO Sensor).
186 Injector Pulse Width Higher or Mass Air Flow 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.
189 Fuel System at Rich Adaptive Limit.
191 Fuel System at Lean Adaptive Limit (Front).
211 Profile Ignition Pickup circuit failure.
212 Loss of Ignition Diagnostic Module Input to PCM/SPOUT - circuit grounded.
214 Cylinder Identification 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 Module Signal - left hand side (Dual Plug EI).
219 Spark Timing Error.
221 Spark Timing Error.
222 Loss of Ignition Diagnostic Module Signal - right hand side (Dual Plug EI).
223 Loss of Dual Plug Ignition Control (Dual Plug EI).
224 PCM detected Coil 1, 2, 3 or 4 Primary circuit failure (EI).
224 Erratic Ignition Diagnostic Module Input to Processor.
224 Loss of Tack Input to Processor/SPOUT - circuit grounded (5.8L).
232 PCM detected Coil 1, 2, 3 or 4 Primary circuit failure (EI).
238 PCM Detect Coil 4 Primary circuit failure.
326 EGR Temperature Sensor circuit above maximum voltage (2.0L, 2.3L HSC & 3.0L SHO).
326 Pressure Feedback EGR circuit voltage Low (other vehicles).
327 EGR circuit below minimum voltage.
328 EGR Valve Position Sensor closed Valve voltage Lower than Expected.
332 Insufficient EGR Flow detected.
334 EGR Valve Position Sensor closed Valve voltage Higher than Expected.
336 Pressure Feedback EGR circuit voltage Higher than Expected.
337 EGR Valve Position/Pressure Feedback EGR circuit above maximum voltage.
338 Engine Coolant Temperature Lower than Expected.
339 Engine Coolant Temperature Higher than Expected.
381 Erratic A/C Compressor Clutch Cycling.
415 Idle Air Control Solenoid.
416 Idle Air Control Solenoid.
452 Insufficient Input from Vehicle Speed Sensor to PCM.
511 Read out Memory Test failure.
512 Keep Alive Memory Test failure.
513 PCM Internal voltage failure.
524 Low Speed Fuel Pump circuit open.
525 Vehicle in Gear with A/C on.
528 Clutch Position Switch circuit failure.
529 Data Communication Link or Electronic Engine Controller Fault.
533 Data Communication Link to Electronic Instrument Cluster Fault.
536 Brake on/Off circuit failure/not Actuated.
542 Fuel Pump circuit open-PCM to Motor Ground.
543 Fuel Pump circuit open-Battery to Powertrain Control Module (PCM).
556 Fuel Pump Relay Primary circuit failure.
557 Low Speed Fuel Pump Primary circuit failure.
578 A/C Pressure Sensor circuit.
579 Insufficient A/C Pressure change.
581 Power to Fan circuit over Current.
583 Power to Fuel Pump over Current.
584 Power Ground circuit open.
585 Power to A/C Clutch over Current.
586 A/C Clutch circuit open.
587 Vehicle Control Relay Module Communication failure.
617 1-2 Shift Error.
618 2-3 Shift Error.
619 3-4 Shift Error.
621 Shift Solenoid 1 circuit failure.
622 Shift Solenoid 2 circuit failure.
623 Transmission Control Indicator Lamp circuit failure.
624 Electronic Pressure Control circuit failure.
625 Hard Fault is Present (5.8L).
625 Electronic Pressure Control Driver open in PCM (other vehicles).
628 Excessive Torque Converter Clutch slippage.
629 Torque Converter Clutch Solenoid circuit failure.
632 Torque Converter Solenoid circuit did not change states.
634 Manual Lever Position Sensor voltage higher or lower than expected.
637 Transmission Fluid Temperature Sensor circuit above maximum voltage.
638 Transmission Fluid Temperature Sensor circuit below minimum voltage.
639 Insufficient Input from Turbine Speed Sensor.
641 Shift Solenoid 3 circuit failure.
643 Torque Converter Clutch circuit failure.
645 Improper Gear Ratio in 1st Gear.
646 Improper Gear Ratio in 2nd Gear.
647 Improper Gear Ratio in 3rd Gear.
648 Improper Gear Ratio in 4th Gear.
649 Electronic Pressure Control higher or lower than expected.
651 Electronic Pressure Control circuit failure.
652 Torque Converter Clutch Solenoid circuit failure.
656 Torque Converter Clutch Slippage Error.
657 Transmission over temperature condition.
667 Transmission Range Sensor circuit below minimum voltage.
668 Transmission Range Sensor circuit above maximum voltage.
The Diagnostic Codes and Explanations are derived from Manufacturer supplied Technical Data. WesTech does not guarantee the accuracy of this Information nor can it be held liable for providing it.
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