OBD1 trouble code chart applies to the following gasoline vehicles:

  1. Ford E150: 1993.
  2. Ford E250: 1993.
  3. Ford E350: 1993.
1993 OBD I Trouble Codes (Ford E150, E250, E350)
Code Key* Definition
11 O R C System Pass
12 R Cannot control RPMs during Self-Test high RPM test
13 R Cannot control RPMs during Self-Test LOW RPM test
14 C Profile Ignition Pickup (PIP) circuit failure
15 C PCM Read Only Memory (ROM) test failed
15 C PCM Keep Alive Memory (KAM) test failed
18 R SPOUT circuit open
18 C Loss of IDM input to the PCM/SPOUT circuit grounded
19 O Failure in PCM internal voltage
21 O R Engine Coolant Temperature (ECT) sensor out of Self-Test range
22 O R C Manifold Absolute Pressure (MAP) sensor out of Self-Test range
23 O R C Throttle Position Sensor (TPS) out of Self-Test range
24 O R Intake Air Temperature (IAT) sensor out of Self-Test range
25 R Knock not sensed during Dynamic Response Test
26 O R Transmission Oil Temp (TOT) out of Self-Test range
29 C Insufficient input from Programmable Speedometer/Odometer Module (PSOM)
31 O R C EVP circuit below minimum voltage
32 O R C EVP voltage below closed limit
33 R C EGR valve opening not detected
34 O R C EVP voltage above closed limit
35 O R C EVP circuit above maximum voltage
41 R System indicates lean
41 C HO2S not switching
42 R System indicates rich
44 C Secondary air system inoperative
45 R Secondary air upstream during Self-Test
46 R Secondary air not bypassed during Self-Test
47 O 4x4 switch is closed
49 C 1-2 Shift error
51 O C Engine Coolant Temp (ECT) sensor indicated -40°C (-40°F)/circuit open
52 O Power Steering Pressure (PSP) switch circuit open
52 R Power Steering Pressure (PSP) switch circuit did not change states
53 O C Throttle Position Sensor above maximum voltage
54 O C Intake Air Temp (IAT) sensor indicated -40°C (-40°F)/circuit open
56 O C Transmission Oil Temp (TOT) sensor indicated -40°C (-40°F)/circuit open
59 C 2-3 shift error
61 O C Engine Coolant Temp (ECT) sensor indicated 123°C (254°F)/circuit grounded
62 C Torque Converter Clutch (TCC) error
63 O C Throttle Position Sensor (TPS) circuit below minimum voltage
64 O C Intake Air Temp (IAT) sensor indicated 123°C (254°F)/circuit open
65 R Transmission Control Switch (TCS) circuit did not change states
66 O C Transmission Oil Temp (TOT) sensor indicated 143°C (290°F)/circuit grounded
67 O Park/Neutral Position (PNP) switch circuit open (automatic transmission); A/C ON (Manual transmission)
67 O C Manual Lever Position (MLP) sensor out of range (automatic transmission); A/C ON (Manual transmission)
69 C 3-4 Shift error
72 R Insufficient MAP change during Dynamic Response Test
73 R Insufficient TPS change during Dynamic Response Test
74 R C Brake On/Off (BOO) circuit open - not actuated during Self-Test
77 R Operator error Dynamic Response Test
81 O Secondary Air Injection Diverter (AIRD) circuit failure
82 O Secondary Air Injection Bypass (AIRB) circuit failure
84 O EGR Vacuum Regulator (EVR) circuit failure
85 O Canister Purge (CANP) circuit failure
87 O C Primary fuel pump circuit failure
91 O Shift Solenoid 1 (SS1) circuit failure
92 O Shift Solenoid 2 (SS1) circuit failure
93 O Coast Clutch Solenoid (CSS) circuit failure
94 O Torque Converter Clutch (TCC) solenoid circuit failure
95 O C Fuel pump circuit open - PCM to motor Ground
96 O C Fuel pump circuit open - battery to PCM
97 O Transmission Control Indicator Lamp (TCIL) circuit failure
98 R Hard fault present
99 O C Electronic Pressure Control (EPC) circuit failure
*Key:
O = Key On Engine Off (KOEO)
R = Key On Engine Running (KOER)
C = Continuous Memory

3 Digit Trouble Codes
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 Throttle position voltage inconsistent with the MAF sensor
122 Throttle Position Sensor (TPS) circuit below minimum voltage
123 Throttle Position Sensor (TPS) circuit above maximum voltage
124 Throttle Position Sensor (TPS) voltage higher than expected
125 Throttle Position Sensor (TPS) voltage lower than expected
126 MAP/BARO sensor higher or lower than expected
128 MAP sensor vacuum hose damaged/disconnected
129 Insufficient MAP/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 Monitor (IDM) signal -left side (dual plug EI)
222 Loss of Ignition Diagnostic Monitor (IDM) signal -right side (dual plug EI)
223 Loss of Ignition Diagnostic Monitor (IDM) signal -right side (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 Powertrain Control Module (PCM)
626 Coast Clutch Solenoid (CSS) 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 4x4 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 (TSS)
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 indicated
998 Hard fault present - FMEM MODE

More Ford E150, E250, and E350 Tutorials

You can find a complete list of tutorials for the full-size Ford E-Series vans here: Ford 4.9L, 5.0L, 5.9L Index Of Articles.

Here's a small sample of the tutorials you'll find:

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