THE CODE DIRECTORY
Diagnostic code references — Page 51.
Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.
Volkswagen
P1242
Cylinder 6 Injector Circuit Open Circuit
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Buick / Cadillac +5
P1243
Injector Circuit Cylinder 8 Intermittent
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Ford / Lincoln +1
P1243
Second Fuel Pump Faulty or Ground Fault
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Acura / Honda
P1243
Throttle Position Insufficient
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Jaguar
P1243
Analog Ground
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Dodge / Jeep +2
P1243
Open Or Shorted Condition Detected In The Turbocharger Surge Valve Solenoid Control
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Volkswagen
P1243
Cylinder 7 Injector Circuit Open Circuit
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Ford / Lincoln +1
P1244
Alternator Load Input Failed High
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Acura / Honda
P1244
Closed Throttle Position Insufficient
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Subaru
P1244
Wastegate Control Solenoid Valve Malfunction Low Input
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Volkswagen
P1244
Cylinder 8 Injector Circuit Open Circuit
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Buick / Cadillac +5
P1245
Intake Plenum Switchover Valve
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Ford / Lincoln +1
P1245
Alternator Load Input Failed Low
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Jaguar
P1245
Crank Signal Low Input
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Subaru
P1245
Wastegate Control Solenoid Valve Malfunction Fail Safe
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Volkswagen
P1245
Needle Lift Sensor Circuit Short To Ground
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Ford / Lincoln +1
P1246
Alternator Load Input Failed
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Acura / Honda
P1246
Accelerator Position Sensor 1 Circuit Malfunction
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Jaguar
P1246
Crank Signal High Input
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Volkswagen
P1246
Needle Lift Sensor Circuit Range Performance
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Ford / Lincoln +1
P1247
Turbo Boost Pressure Low
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Acura / Honda
P1247
Accelerator Position Sensor 2 Circuit Malfunction
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Volkswagen
P1247
Needle Lift Sensor Circuit Open/Short To B+
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Ford / Lincoln +2
P1248
Turbo Boost Pressure Not Detected
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Acura / Honda
P1248
Accelerator Position Sensors 1 & 2 Improper Correlation
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Volkswagen
P1248
Injection Start Control Deviation
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Ford / Lincoln +1
P1249
Wastegate Control Valve Performance
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Volkswagen
P1249
Fuel Consumption Signal Electrical Fault In Circuit
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Buick / Cadillac +5
P1250
Early Fuel Evaporation Heater Circuit
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Ford / Lincoln +1
P1250
Lack of Power to FPRC Solenoid
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Geo
P1250
Early Fuel Evaporation Heater Circuit Fault
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Jaguar
P1250
Throttle Valve Spring
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Kia
P1250
Pressure Regulator Control Solenoid Valve Open Or Short
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Mazda
P1250
Pressure Regulator Control Solenoid Circuit
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Suzuki
P1250
EFE Heater Circuit Fault
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Volkswagen
P1250
Fuel Level Too Low
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Jaguar
P1251
Throttle Position
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Mazda
P1251
Air Mixture Solenoid Circuit
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Volkswagen
P1251
Start Of Injection Solenoid Circuit Short To B+
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Ford / Lincoln +1
P1252
Pedal Correlation PDS1 and LPDS High
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Jaguar
P1252
VSV Stuck On VA/VV
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Kia
P1252
Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction
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Mazda
P1252
Pressure Regulator Control Solenoid 2 Circuit Malfunction
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Volkswagen
P1252
Start Of Injection Solenoid Circuit Open/Short To Ground
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Ford / Lincoln +1
P1253
Pedal Correlation PDS1 and LPDS Low
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Acura / Honda
P1253
VTEC System Circuit Fault
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Jaguar
P1253
VSV Stuck On VR
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Volkswagen
P1253
Fuel Consumption Signal Short To Ground
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Ford / Lincoln +1
P1254
Pedal Correlation PDS2 and LPDS High
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Volkswagen
P1254
Fuel Consumption Signal Short To B+
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Ford / Lincoln +1
P1255
Pedal Correlation PDS2 and LPDS Low
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Volkswagen
P1255
Engine Coolant Temperature Circuit Short To Ground
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Ford / Lincoln +1
P1256
Pedal Correlation PDS1 and HPDS
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Volkswagen
P1256
Engine Coolant Temperature Circuit Open/Short To B+
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Buick / Cadillac +5
P1257
Supercharger System Overboost
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Ford / Lincoln +1
P1257
Pedal Correlation PDS2 and HPDS
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Volkswagen
P1257
Engine Coolant System Valve Open
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Buick / Cadillac +5
P1258
Engine Coolant Overtemperature Protection Mode Active
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Ford / Lincoln +1
P1258
Pedal Correlation PDS1 and PDS2
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Volkswagen
P1258
Engine Coolant System Valve Short To B+
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Acura / Honda
P1259
VTEC System Malfunction Rear Bank 1
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Volkswagen
P1259
Engine Coolant System Valve Short To Ground
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Buick / Cadillac +5
P1260
Last Test Failed SCC Or Theft Detected Vehicle Immobilized
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Ford / Lincoln +1
P1260
Theft Detected Engine Disabled
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Jaguar
P1260
Theft Detected Vehicle Immobilized
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Mazda
P1260
Anti-Theft System Signal Detected Engine Disabled
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Ford / Lincoln +1
P1261
Cylinder #1 High To Low Side Short
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Ford / Lincoln +1
P1262
Cylinder #2 High To Low Side Short
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Ford / Lincoln +1
P1263
Cylinder #3 High To Low Side Short
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Ford / Lincoln +1
P1264
Cylinder #4 High To Low Side Short
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Ford / Lincoln +1
P1265
Cylinder #5 High To Low Side Short
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Ford / Lincoln +1
P1266
Cylinder #6 High To Low Side Short
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Ford / Lincoln +1
P1267
Cylinder #7 High To Low Side Short
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Ford / Lincoln +1
P1268
Cylinder #8 High To Low Side Short
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BMW
P1270
Control Module Self-Test Torque Monitoring
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Buick / Cadillac +5
P1270
Accelerator Pedal Position Sensor A/D Converter Error
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Mazda
P1270
Engine RPM or Vehicle Speed Limit Reached
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BMW
P1271
Ambient Air Pressure Sensor Electrical
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Buick / Cadillac +5
P1271
APP Sensor 1-2 Performance
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Ford / Lincoln +1
P1271
Cylinder #1 High To Low Side Open
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Buick / Cadillac +5
P1272
Accelerator Pedal Position Sensor 2
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Ford / Lincoln +1
P1272
Cylinder #2 High To Low Side Open
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Buick / Cadillac +5
P1273
Accelerator Pedal Position Sensor 1
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Ford / Lincoln +1
P1273
Cylinder #3 High To Low Side Open
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Buick / Cadillac +5
P1274
Injectors Wired Incorrectly
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Ford / Lincoln +1
P1274
Cylinder #4 High To Low Side Open
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Buick / Cadillac +5
P1275
Accelerator Pedal Position (APP) Sensor 1 Circuit
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Ford / Lincoln +1
P1275
Cylinder #5 High To Low Side Open
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Buick / Cadillac +5
P1276
Accelerator Pedal Position (APP) Sensor 1 Performance
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Ford / Lincoln +1
P1276
Cylinder #6 High To Low Side Open
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Buick / Cadillac +5
P1277
Accelerator Pedal Position Sensor 1 Circuit Low Voltage
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Ford / Lincoln +1
P1277
Cylinder #7 High To Low Side Open
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Buick / Cadillac +5
P1278
Accelerator Pedal Position Sensor 1 Circuit High Voltage
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Ford / Lincoln +1
P1278
Cylinder #8 High To Low Side Open
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Acura / Honda
P1279
VTEC System Malfunction Front Bank 2
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Mazda
P1279
Control Sleeve Sensor Circuit Range Performance
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Buick / Cadillac +5
P1280
Accelerator Pedal Position (APP) Sensor 2 Circuit
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Ford / Lincoln +1
P1280
Injection Control Pressure Out Of Range Low
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Dodge / Jeep +2
P1280
Open Or Shorted Condition Detected In The Fuel System Relay Control Circuit
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Volkswagen
P1280
Fuel Injection Air Control Valve Circuit Flow Too Low
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.