Ford Fault Codes(dtc,obd)

CODE MEANING ACTION


1 - 8 Cylinder No (as code) low power Cylinder balance test

9 Pass Cylinder balance test

10 Cylinder No. 1 low Cylinder balance test

11 Cylinder No. 2 low Cylinder balance test

12 Cylinder No. 3 low Cylinder balance test

12 Cylinder No. 4 low Cylinder balance test

111 All systems OK

112 Low voltage air change temperature sensor (ACT) Normal operating temp not reached

113 High voltage air change temperature sensor (ACT) Normal operating temp not reached

114 Out of range voltage air change temperature sensor (ACT) Normal operating temp not reached

116 Out of range Engine coolant temperature sensor (ECT) Normal operating temp not reached

117 Low voltage Engine coolant temperature sensor (ECT) Normal operating temp not reached

118 High voltage Engine coolant temperature sensor (ECT) Normal operating temp not reached

121 Outside range throttle position sensor (TPS)

122 Low voltage throttle position sensor (TPS)

123 High voltage throttle position sensor (TPS)

124 Above spec throttle position sensor (TPS)

125 Below spec throttle position sensor (TPS)

126 MAP voltage above spec

128 MAP sensor/vacuum hose fault

129 MAF sensor, no MAF change during throttle depression Repeat self test proceedure

136 Lambda sensor (left) mixture lean

137 Lambda sensor (left) mixture rich

139 Lambda sensor (left)

144 Lambda sensor (right)

157 Low voltage mass air flow sensor (MAF)

158 HIGH voltage mass air flow sensor (MAF)

159 Outside range mass air flow sensor (MAF)

167 Throttle position sensor (TPS). No change during throttle depression Repeat self test procedure

171 Lambda sensor (right)

172 Lambda sensor (right) too lean

173 Lambda sensor (right) too rich

174 Lambda sensor (right) slow response

175 Lambda sensor (left)

176 Lambda sensor (left) too lean

177 Lambda sensor (left) too rich

178 Lambda sensor (left) slow response

179 Fuel system lean, part throttle

181 Fuel system rich, part throttle

182 Idle mixture too lean Idle speed control vale (ISC)

183 Idle mixture too rich Idle speed control vale (ISC)

184 Above spec manifold air flow sensor

185 Below spec manifold air flow sensor

186 Too long injection time pulse width

187 Too short injection time pulse width

188 Lambda sensor on left, mixture too lean (part throttle)

189 Lambda sensor on left, mixture too rich (part throttle)

191 Idle mixture too lean, left hand Lambda sensor Check EGR valve, check ISC valve

192 Idle mixture too rich, lright hand Lambda sensor Check EGR valve, check ISC valve

193 Flexible fuel sensor circuit

194 Lambda sensor

195 Lambda sensor

211 PIP signal

212 Tach, circuit, SPOUT grounded. SPOUT circuit, open circuit

213 Tach, circuit, SPOUT grounded. SPOUT circuit, open circuit

214 CID circuit failure

215 #1 Coil

216 #2 Coil

217 #3 Coil

218 Tachometer circuit

219 Spark timing default to 10 deg rectify SPOUT circuit

220 Tachometer circuit

221 Spark timing error

225 Knock sensor

226 EEC IV/EDIS module pulse

227 Engine speed/crankshaft position sensor (CPS)

228 EDIS module/ignition coil winding 1

229 EDIS module/ignition coil winding 2

231 EDIS module/ignition coil winding 3

232 Primary circuit of ignition coil (IGC)

233 EDIS module

234 Ignition Coil (IGC)

235 Ignition Coil (IGC)

236 Ignition Coil (IGC)

237 Ignition Coil (IGC)

238 EDIS module/ignition coil

239 PIP signal present when cranking

241 EEC IV/EDIS module, incorrect self test data Repeat self test procedure

243 Coil failure

244 Cylinder identification fault when power balance requested

311- 316 Pulse air/thermactar air system faulty

326 Electronic pressure transducer (EPT)/differential pressure feedback exhaust (DPFE) sensor

327 Electronic pressure transducer (EPT)/differential pressure feedback exhaust (DPFE) sensor/electronic vacuum regulator (EVR)

328 Electronic vacuum regulator (EVR)

332 EGR valve not opening

334 Electronic vacuum regulator

335 Electronic pressure transducer (EPT)/differential pressure feedback exhaust (DPFE) sensor

336 Exhaust pressure too high

337 Electronic pressure transducer (EPT)/differential pressure feedback exhaust (DPFE) sensor/electronic vacuum regulator (EVR)

338 Cooling System

339 Cooling System

341 Octane adjust (service multiplug) grounded Disconnect for self test, reconnect after

411 Engine speed during self test too low Cure induction leaks, repeat test

412 Engine speed during self test too low Cure induction leaks, repeat test

413 - 416 ISC valve Cure induction leaks, repeat test

452 Vehicle speed sensor

453 Servo leaking down

454 Servo leaking up

455 Insufficient RPM increase

456 Insufficient RPM decrease

457 - 458 Speed control fault

511 ROM fault Battery disconnected, check KAM fuse. if OK module faulty

512 Keep alive memory (KAM) fault Battery disconnected, check KAM fuse. if OK module faulty

513 EEC IV module reference voltage V

519 Power steering pressure switch (PSPS) not activated during self test Repeat test

521 Power steering pressure switch (PSPS) not activated during self test Repeat test

522 Neutral/drive switch (NDS)

525 Vehicle in gear or air conditioning on

528 Clutch switch error

536 Brake on/off (BOO) switch not activated during self test Repeat test

538 Operating error during self test. Air Conditioning switched on Repeat test

539 Operating error during self test. Air Conditioning switched on Repeat test

542 Fuel pump (FP) circuit failure

543 Fuel pump (FP) circuit failure

551 Idle speed control (ISC) circuit failure

552 Pulse air circuit failure

554 Fuel pressure regulator control circuit failure

556 Electrical circuit of fuel pump

557 Low speed fuel pump circuit

558 Electrical circuit of (EVR) electronic vacuum regulator

563 High speed electric drive fan relay/circuit (HEDF) failure

564 Electronic drive fan relay/circuit (EDF) failure

565 Canister purge solenoid (CANP)

566 3rd/4th gear solenoid (ATA)

573 Electronic drive fan relay/circuit (EDF) failure

574 High speed electronic drive fan relay/circuit (HEDF) failure

575 Fuel pump circuit and/or inertia switch circuit

576 Kick down switch (KDS) Repeat test

577 Kick down switch (KDS) not activated during self test Repeat test

583 Power to fuel pump fault

612 4/3 switch failed open circuit

613 4/3 switch failed open circuit

614 3/2 switch short circuit

615 3/2 switch failed short circuit

621 Shift solenoid 1 circuit failed

622 Shift solenoid 2 circuit failed

624 EPC solenoid failure

625 EPC solenoid circuit failure

628 MLUS Failure

629 Torque converter lock up clutch solenoid (LUS)

634 Neutral drive switch (NDS) circuit failure

635 Transmission temperature switch failure

637 Transmission temperature switch failure

639 TSS failure

645 1st gear failure

646 2nd gear failure

647 3rd gear failure

648 4th gear failure

649 ETV failure

651 ETV intermittent failure

652 MLUS circuit failure

653 Transmission control switch not activated during self test Repeat test

998 Fault in ECT/ACT/MAF/TPR circuit


(R) = Engine Running test (M) = Memory code (O)=Key On Engine Off test


11 System OK


12 


Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) - ISC 


13 

(O) 

ISC did not respond properly (extends to touch throttle then retracts for KOEO) - ISC 



(R) 

Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high) 



(M) 

ISC sticking, open ITS circuit or TP sticking 


14 


Ignition pickup (PIP) was erratic - Ignition Systems 




E4OD Transmission diesel RPM sensor - Diesel RPM sensor 


15 

(O) 

No Keep Alive Memory power to PCM pin 1 or bad PCM (Memory Test Failure) 



(M) 

KAM (pin 1) was interrupted (was battery disconnected ?) 


16 


1 9L & 2 5L - Throttle stop set too high - IDLE or Idle Set Procedures 




2 3L - RPM's too low - IDLE 



(O) 

Electronic ignition - IDM circuit fault - Ignition Systems 


17 


1 9L & 2 5L - Throttle stop set too low - IDLE 


18 

(R) 

Check base timing & advance function - Timing Tests 



(M) Ignition TACH signal erratic - Ignition Systems 




Spark Angle Word (SAW) circuit failure (1 9L SFI) 


19 

(O) 

No Vehicle Power (pins 37 + 57) or bad PCM VPWR Diagnosis 



(R) 

Erratic idle during test (reset throttle & retest) - Idle Set Procedures 




Electronic ignition Cylinder ID sensor/circuit problem - Ignition Systems 


21 


Engine Coolant Temperature (ECT) sensor out of range - ECT 


22 


MAP (vacuum) or BARO signal out of range - MAP 


23 


Throttle sensor out of range or throttle set too high - TPS 


24 


Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range - IAT VAT 


25 


Knock sensor not tested (ignore if not pinging) - KS 


26 


Mass Air Flow (MAF) or Vane Air Flow (VAF) out of range - MAF VAF 




Transmission Oil Temperature (TOT) sensor out of range, Transmissions 


27 


Vehicle Speed Sensor problem - VSS 


28 


Vane Air Temperature (VAT) sensor out of range - VAT 




2 3L w/Electronic Ignition - Cyl ID, IDM low or right coil pack failure - Ignition Systems 


29 


Vehicle Speed Sensor problem - VSS 


31 

(O,R,M) 

EVP - EVP signal is/was out of range - EVP 



(O,R,M) 

EVR - EVP signal is/was low - EVR 



(O,R,M) 

PFE - PFE signal is/was low - PFE 


32 

(R) 

EVP - EGR not responding properly during test - EVP 



(O,R,M) 

EVR - EVP signal is/was low - EVR 



(R,M) 

PFE - PFE shows low pressure, EGR not seating or memory, not seating intermittently - PFE 


33 

(O,M) 

ALL - EGR did not open/ respond during test or if memory code, did not open intermittently - EVP EVR PFE 


34 

(R) 

EVP - EGR did not respond properly during test - EVP 



(O,R,M) 

EVR - EVP sensor is/was high - EVR 



(O,R,M) 

PFE - PFE sensor is/was out of range - PFE 


35 

(R) 

EVP - Engine RPM's too low to test EGR system - EVP 



(O,R,M) 

EVR - EVP sensor signal is/was high - EVR 



(O,R,M) 

PFE - PFE sensor signal is/was high - PFE 


38 


Idle Tracking Switch signal was intermittent - ISC 


39 


Transmission Torque Converter clutch not engaging - Transmissions 


41 

(R) 

System lean - Fuel control 



(M) 

System was lean for 15 seconds or more (no HO2S switching) - Fuel control 


42 

(R) 

System rich - Fuel control 



(M) 

System was rich for 15 seconds or more (no HO2S switching) - Fuel control 


43 

(R) 

HO2S sensor not reading (run at 2000 rpm's for 2 minutes and retest - check for HO2S switching) 



(M) 

Was lean at WOT for 3 seconds or more - Fuel control 


44 


AIR system inoperative - Air Injection 


45 


AIR not Diverting (AIRD) - Air Injection 




Electronic Ignition - coil primary circuit failure - Ignition Systems 


46 


AIR Bypass (AIRB) not working - Air Injection 




Electronic Ignition - primary circuit failure coil 2 - Ignition Systems 


47 


Low flow unmetered air (check for small vacuum leaks, injector o'rings, gaskets etc ) 




E4OD transmission 4x4 switch/circuit problem - Transmissions 


48 


High flow unmetered air (check for large vacuum leak, inlet hoses etc ) 




Electronic Ignition - coil primary circuit failure - Ignition Systems 


49 


Electronic Ignition - spout signal circuit problem - Ignition Systems 




Transmission 1/2 shift problem - Transmissions 


51 


Engine Coolant Temperature (ECT) sensor signal is/was too high - ECT 


52 


Power Steering Pressure Switch/circuit open - PSP 



(R) 

Did you turn wheel during test ? 


53 


Throttle Position sensor too high - TPS 


54 


Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high - IAT VAT 


55 


No or low (under 7 5 V) Key Power to PCM pin 5 


56 


Vane Air Flow (VAF) or Mass Air Flow (MAF) sensor high - VAF MAF 




Transmission Oil Temperature sensor too high - Transmissions 


57 


Intermittent in Park/Neutral/ Switch or Neutral Pressure switch circuit - PNP or Transmissions 


58 


Idle Tracking Switch (ITS) signal problem ISC 




Vane Air Temperature (VAT) sensor out of range or open - VAT 


59 


AXOD 4/3 circuit fault - Transmissions 




3 0L SHO - Low speed fuel pump circuit problem - Power / Fuel Pump Circuits 




Transmission 2/3 shift problem - Transmissions 


61 


Engine Coolant Temperature (ECT) sensor is or was too low - ECT 


62 


AXOD (KOEO only) 3/2 circuit short to ground - Transmissions 




AXOD (KOEO AND KOER) 4/3 circuit failure - Transmissions 




E4OD excessive converter clutch slippage - Transmissions 


63 


Throttle Position Sensor (TPS) signal too low TPS 


64 


Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded - IAT VAT 


65 


Check intermittent HO2S (signal or ground) - Fuel Control 



(R) 

E4OD truck - cycle OD cancel switch after engine ID is received - Transmissions 




1984 3 8L ONLY - O, M Battery voltage high (check for electrical system overcharging) 


66 

Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low - VAF MAF




Transmission Oil Temperature (TOT) signal low (possibly grounded) - Transmissions 


67 


Park/Neutral circuit fault - PNP 




Transmission Manual Lever Position (MLP) sensor circuit - Transmissions 



(M) 

Intermittent Park Neutral Position (PNP) sensor fault - PNP 


68 


Idle Tracking Switch (ITS) circuit (possibly grounded) - ISC 




Vane Air Temperature (VAT) sensor out of range or grounded - VAT 




3 8L AXOD -Transmission Temperature Switch (TTS) open - Transmissions 




Electronic Transmission - Transmission Oil Temperature (TOT) sensor was overheated -Transmissions 


69 


AXOD transmission (O) 3/2 switch closed (possible short circuit) - Transmissions 




AXOD (M) 3/2 switch open (poss short to power) - Transmissions 




E4OD 3/4 shift problem - Transmissions 


70 

(M) 

3 8L AXOD - Data link to instrument cluster fault Service any other EEC codes, erase memory and retest If code is still present refer to instrument cluster diagnosis manual 


71 

(M) 

1 9L TBI, 2 3L TBI, 2 5L TBI - ITS signal was grounded when throttle should have been opening ITS-ISC ISC motor problem or Idle Tracking Switch (ITS) signal wire shorted to ground - ISC 



(M) 

1 9L MFI - PCM re-initialized Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis 



(M) 

3 8L AXOD - Data link to instrument cluster fault - See code 70 


72 

(R) 

No MAP or MAF change in "goose" test - retest, check for frequency or voltage change - MAP MAF 



(M) 

1 9L MFI - VPWR circuit to PCM was intermittent - VPWR Diagnosis 



(M) 

2 3L T/C - PCM re-initialized Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis 



(M) 

3 8L AXOD - Message center data link circuit fault - See code 70 


73 

(O) 

Rerun test, if 73 is still output replace TPS 



(R) 

No Throttle Position Sensor (TPS) change in "goose" test Must get at least 25% throttle rotation - TPS 


74 


Was brake depressed after engine ID was received ? 




Brake On Off (BOO) signal open or short to ground - BOO 


75 


Brake On Off (BOO) signal shorted to power - BOO 


76 


Vane Air Flow (VAF) did not respond to "goose" test - VAF 


77 


System did not receive "goose" test - see TESTS 


78 

(M) 

VPWR circuit to PCM was intermittent or the PCM is bad VPWR Diagnosis 


79 


A/C is on or pin 10 is shorted to power 


81 


Boost control solenoid - Solenoids 




AIRD solenoid - Solenoids and Air Injection 




3 0L SHO - Inlet Air Solenoid - Solenoids 


82 


2 3L TC - Fan Control wire shorted to ground - A/C and Fan Circuits 




AIRB solenoid - Solenoids and Air Injection 




3 8L SC - Super Charger Bypass Solenoid - Solenoids 


83 


High Electro Drive Fan circuit fault - A/C and Fan Circuits 




EGR Control solenoid - Solenoids 




3 0L SHO - Low Speed Fuel Pump Relay circuit - Power / Fuel Pump Circuits 


84 


EGR Vacuum Regulator - Solenoids 




EGR cutoff solenoid - Solenoids 




EGR Vent solenoid - Solenoids 


85 


2 3L T/C Automatic - 3/4-4/3 Shift solenoid - Transmissions 




CANP solenoid (ALL 1989) - Solenoids 



(M) 

1 9L MFI - System has corrected rich condition - Fuel control 


86 


2 3L or 2 9L Truck - A4LD 3/4 shift solenoid - Transmissions 




(M) 1 9L MFI - System has corrected lean condition - Fuel control 


87 

(O) 

Fuel pump circuit fault (check inertia switch) - Power / Fuel Pump Circuits 




Vehicles with 2BBL carb - Temperature Compensated Accelerator Pump Solenoid - Solenoids (M) intermittent in fuel pump primary circuit - Power / Fuel Pump Circuits NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring 


88 


Throttle Kicker Solenoid - Solenoids 




Variable Voltage Choke relay circuit fault - VVC 




Fan Control circuit fault - A/C and Fan Circuits 




A4LD - Converter Clutch Override solenoid - Transmissions 




Electronic Ignition - IDM, DPI or spout circuit fault - Ignition Systems 


89 


A4LD - Converter Clutch Override solenoid - Transmissions 




AXOD Torque Converter Control solenoid circuit - Transmissions 




Exhaust Heat Control (heat riser) solenoid circuit - Solenoids 


91 (R, M)

System running lean - Fuel control 




Transmission SS 1 circuit/solenoid problem - Transmissions 


92 

(R) 

System running rich - Fuel control 




Transmission SS 2 circuit/solenoid problem - Transmissions 


93 

(O,R) 

Throttle linkage binding or bad ISC motor ISC HO2S not reading Fuel control 



Transmission TCC circuit/solenoid problem - Transmissions 


94 


AIR system inoperative - Air Injection 




Transmission TCC circuit/solenoid problem - Transmissions 


95 

(O) 

Fuel pump: open, bad ground or always on - Power / Fuel Pump Circuits 



(R) 

AIR not Diverting (AIRD) - Air Injection 



(M) 

Possible bad fuel pump ground or open between fuel pump and pin 8 at PCM (Fuel Pump Monitor signal) - Power / Fuel Pump Circuits 


96 

(O) 

Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits 



(R) 

AIR Bypass (AIRB) not working - Air Injection 



(M) 

(Service 87 code first if present) Fuel pump relay or battery power feed was open - Power / Fuel Pump Circuits 


97 


E4OD OD cancel light circuit failure - Transmissions 


98 

(R) 

Did not pass KOEO yet (Get 11 in KOEO first) 




Transmission EPC circuit/solenoid failure - Transmissions 


99 

(R) 

ISC needs to learn (Let idle for 2 minutes, Erase memory and retest)