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Diagnostic Trouble Code numbers are read by plugging a code reader or scan tool into the vehicle diagnostic connector (usually located under the instrument panel near the steering column) that can read vehicle manufacturer enhanced or P1 c odes (not just generic or P0 codes). The presence of a code will turn on the Check Engine Light. The light will remain on until the code has been erased. The code number does not tell you which part has failed. It only indicates a possible fault has been detected in the circuit, system or sensor described. Further testing is usually required to isolate the fault BEFORE repairs are made.
For vehicle specific diagnostic charts and vehicle specific repair information, refer to a service manual, or get a subscription to the Ford Service Information website.
The following is a partial listing of common Ford specific "P1" enhanced OBD II fault codes:
P1001 KOER (Key On Engine Running) self test not able to complete
P1100 MAF (Mass Air Flow) sensor intermittent (Click Here for help diagnosing MAF airflow sensor faults)
P1101 MAF sensor our of self test range
P1102 MAF in range but lower than expected
P1103 MAF in range but higher than expected
P1104 MAF ground malfunction
P1105 Dual alternator upper fault
P1106 Dual alternator lower fault
P1107 Dual alternator lower circuit malfunction
P1108 Dual alternator battery lamp circuit malfunction
P1109 IAT (Intake Air Temperature) - B sensor intermittent
P1110 IAT sensor (D/C) open/short circuit (Click Here for help diagnosing Air Temperature Sensor faults)
P1111 System pass
P1112 IAT sensor intermittent
P1113 IAT sensor (L/C) open/short circuit
P1114 IAT - B circuit low input
P1115 IAT - B circuit high input
P1116 ECT (Engine Coolant Temperature) sensor out of self test range
P1117 ECT sensor intermittent (Click Here for help diagnosing Coolant Sensor faults)
P1118 Manifold absolute temperature circuit low input (Click Here for help diagnosing MAP Sensor faults)
P1119 Manifold absolute temperature circuit high input
P1120 TP (Throttle Position) sensor out of range low (Click Here for help diagnosing Throttle Position Sensor faults)
P1121 TP sensor inconsistent with MAF sensor
P1122 TP in range but lower than expected
P1123 TP in range but higher than expected
P1124 TP sensor out of self test range
P1125 TP sensor intermittent
P1126 TP narrow range circuit malfunction
P1127 Exhaust not warm - downstream O2 sensor not tester
P1128 Upstream heated O2 sensors swapped
P1129 Downstream heated O2 sensors swapped
P1130 Lack of HO2SII (heated oxygen sensor number) switch - adaptive fuel at limit
P1131 Lack of HO2SII switch - sensor indicates lean (Click Here for help diagnosing Oxygen Sensor faults)
P1132 Lack of HO2SII switch - sensor indicates rich
P1133 Bank 1 fuel control shifted lean (FAOSC)
P1134 Bank 1 fuel control shifted rich (FAOSC)
P1135 Pedal position sensor A circuit malfunction
P1136 Control box fan circuit malfunction
P1137 Lack of HO2S12 switch - sensor indicates lean
P1138 Lack of HO2S12 switch - sensor indicates rich
P1139 Water in fuel indicator circuit malfunction
P1140 Water in fuel condition
P1141 Fuel restriction indicator circuit malfunction
P1142 Fuel restriction condition
P1143 Air assist control valve range/performance
P1144 Air assist control valve circuit malfunction
P1150 Lack of HO2S21 switch - adaptive fuel at limit
P1151 Lack of HO2S21 switch - sensor indicates lean
P1152 Lack of HO2S21 switch - sensor indicates rich
P1153 Bank 2 fuel control shifted lean (FAOSC)
P1154 Bank 2 fuel control shifted rich (FAOSC)
P1155 Alternative fuel controller has activated MIL (Malfunction Indicator Light)
P1156 Fuel select switch malfunction
P1157 Lack of HO2S22 switch - sensor indicates lean
P1158 Lack of HO2S22 switch - sensor indicates rich
P1159 Fuel stepper motor malfunction
P1167 Invalid test, operator did not actuate throttle
P1168 Fuel rail sensor in-range low failure
P1169 Fuel rail sensor in-range high failure
P1170 ESO - engine shut off solenoid fault
P1171 Rotor sensor fault
P1172 Rotor control fault
P1173 Rotor calibration fault
P1174 Cam sensor fault
P1175 Cam control fault
P1176 Cam calibration fault
P1177 Synchronisation fault
P1178 Boltup limits fault
P1180 Fuel delivery system malfunction - low
P1181 Fuel delivery system malfunction - high
P1182 Fuel shut off solenoid malfunction
P1183 Engine oil temperature circuit malfunction
P1184 Engine oil temperature out of self test range
P1185 FTS high - fuel pump temperature sensor high
P1186 FTS low - fuel pump temperature sensor low
P1187 Variant selection
P1188 Calibration memory fault
P1189 Pump speed signal fault
P1190 Calibration resistor out of range
P1191 Key line voltage
P1192 V external
P1193 EGR drive overcurrent
P1194 ECU A/D converter
P1195 SCP HBCC failed to initialize
P1196 Key off voltage too high
P1197 Key off voltage too low
P1198 Pump rotor control underfueling
P1199 Fuel level input circuit low
P1201 Injector circuit open / shorted - cylinder 1
P1202 Injector circuit open / shorted - cylinder 2
P1203 Injector circuit open / shorted - cylinder 3
P1204 Injector circuit open / shorted - cylinder 4
P1205 Injector circuit open / shorted - cylinder 5
P1206 Injector circuit open / shorted - cylinder 6
P1209 Injector control pressure system fault
P1210 Injector control pressure above expected level
P1211 Injector control pressure sensor above / below desired level
P1212 Injector control pressure not detected during crank
P1213 Start injector circuit malfunction
P1214 Pedal position sensor B circuit intermittent
P1215 Pedal position sensor C circuit low input
P1216 Pedal position sensor C circuit high input
P1217 Pedal position sensor C circuit intermittent
P1218 CID high
P1219 CID low
P1220 Series throttle control system malfunction
P1221 Traction control system malfunction
P1222 Traction control output circuit malfunction
P1223 Pedal demand sensor B circuit high input
P1224 Throttle position sensor B out of self test range
P1225 Needle lift sensor malfunction
P1126 Control sleeve sensor malfunction
P1127 Wastegate failed closed (over pressure)
P1128 Wastegate failed open (under pressure)
P1229 Intercooler pump driver fault
P1230 Fuel pump low speed malfunction (Click Here for help diagnosing Fuel Pump faults)
P1231 Fuel pump secondary circuit low, high speed
P1232 Fuel pump speed primary circuit malfunction
P1233 Fuel pump driver module off line
P1234 Fuel pump driver module off line
P1235 Fuel pump control out of range
P1236 Fuel pump control out of range
P1237 Fuel pump secondary circuit malfunction
P1238 Fuel pump secondary circuit malfunction
P1239 Speed fuel pump positive feed fault
P1240 Sensor power supply malfunction
P1241 Sensor power supply low input
P1242 Sensor power supply high input
P1243 Second fuel pump faulty or ground fault
P1244 Alternator load input failed high
P1245 Alternator load input failed low (Click Here for help diagnosing Alternator faults)
P1246 Alternator load input failed / various code
P1247 Turbo boost pressure (Click Here for help diagnosing Turbocharger problems)
P1248 Turbo boost pressure not detected
P1249 Wastgate control valve performance
P1250 PRC solenoid circuit malfunction
P1251 Air mixture solenoid circuit malfunction
P1252 Pedal correlation PDS1 and LPDS high
P1253 Pedal correlation PDS1 and LPDS low
P1254 Pedal correlation PDS2 and LPDS high
P1255 Pedal correlation PDS2 and LPDS low
P1256 Pedal correlation PDS1 and HPDS
P1257 Pedal correlation PDS2 and HPDS
P1258 Pedal correlation PDS1 and PDS2
P1259 Immobilizer to PCM (Powertrain/engine Control Module) signal error ( Click Here for help troubleshooting Anti-Theft System Problems)
P1260 Theft detected, vehicle immobilized
P1261 Cylinder #1 high to low side short
P1262 Cylinder #2 high to low side short
P1263 Cylinder #3 high to low side short
P1264 Cylinder #4 high to low side short
P1265 Cylinder #5 high to low side short
P1266 Cylinder #6 high to low side short
P1267 Cylinder #7 high to low side short
P1268 Cylinder #8 high to low side short
P1269 Immobilizer code not programmed
P1270 Engine RPM or speed limiter reached
P1271 Cylinder #1 high to low side open
P1272 Cylinder #2 high to low side open
P1273 Cylinder #3 high to low side open
P1274 Cylinder #4 high to low side open
P1275 Cylinder #5 high to low side open
P1276 Cylinder #6 high to low side open
P1277 Cylinder #7 high to low side open
P1278 Cylinder #8 high to low side open
P1280 Injection control pressure out of range low
P1281 Injection control pressure out of range high
P1282 Excessive injection control pressure
P1283 IPR circuit failure
P1284 Aborted KOER (key on engine running) - ICP failure
P1285 Cylinder head overtemperature sensed
P1286 Fuel pulse in rnage but lower than expected
P1287 Fuel pulse in range but higher than expected
P1288 Cylinder head temperature sensor out of self test range
P1289 Cylinder head temperature sensor high input
P1290 CYlinder head temperature sensor low input
P1291 Injector high side short to ground bank 1
P1292 Injector high side short to ground bank 2
P1293 Injector high side open bank 1
P1294 Injector high side open bank 2
P1295 Multi faults - bank 1 with low side shorts
P1296 Multi faults - bank 2 with low side shorts
P1297 Injector high sides shorted together
P1298 IDM failure
P1299 Cylinder head over-temperature protection active
Click Here for List of Ford Codes P1300 to P1499
Click Here for List of Ford Codes P1500 to P1699
Click Here for List of ford Codes P1700 to P1999
