P1249 Buick Wastegate Control Valve Performance Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave…
Category: Buick
P1249 Buick Wastegate Control Valve Performance
P1250 Buick Early Fuel Evaporation Heater Circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick…
P1242 Buick Sensor Power Supply High Input
P1243 Buick Injector Circuit Cylinder 8 Intermittent Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous –…
P1243 Buick Injector Circuit Cylinder 8 Intermittent
P1244 Buick Alternator Load Input Failed High Possible causes GEN-MON circuit short to B+. GEN-COM circuit short to B+. B+ open prior to start-up. Open GEN-COM prior to start-up. Open I-line prior to start-up. Damaged PCM. Tech description Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. Symptoms –…
P1244 Buick Alternator Load Input Failed High
P1245 Buick Alternator Load Input Failed Low Possible causes GEN-COM circuit short to GND. GEN-MON circuit short to GND. Open B+ wire during operation. Low system voltage. Broken generator belt. Damaged generator/regulator assembly. Damaged PCM. Tech description Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. Symptoms – Engine…
P1245 Buick Alternator Load Input Failed Low
P1246 Buick Alternator Load Input Failed Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick…
P1238 Buick Turbocharger Control valve
P1239 Buick Speed Fuel Pump Positive Feed Fault Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous…
P1239 Buick Speed Fuel Pump Positive Feed Fault
P1240 Buick Injector Circuit Cyllinder 7 Intermittent Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous –…
P1240 Buick Injector Circuit Cyllinder 7 Intermittent
P1241 Buick Sensor Power Supply Low Input Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous –…
P1241 Buick Sensor Power Supply Low Input
P1242 Buick Sensor Power Supply High Input Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous –…
P1235 Buick Fuel Pump Control Out Of Range
P1236 Buick Fuel Pump Control Out Of Range Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano –…
P1236 Buick Fuel Pump Control Out Of Range
P1237 Buick Injector Circuit Cylinder 6 Intermittent Possible causes – Faulty Fuel Pump Driver Module (FPDM)– Fuel Pump Driver Module (FPDM) harness is open or shorted– Fuel Pump Driver Module (FPDM) circuit poor electrical connection– Faulty fuel pump What about the obd code? Fuel pump driver module has detected a fault in the fuel pump…
P1237 Buick Injector Circuit Cylinder 6 Intermittent
P1238 Buick Turbocharger Control valve Possible causes – Air leakage after turbocharger – Hoses between turbocharger and turbocharger control valve are loose, blocked or damage – Hoses between turbocharger control valve and pressure servo are loose, blocked or damage – Faulty turbocharger control valve – Faulty boos pressure control valve pressure servo – Sticking boost…
P1234 Buick Fuel Pump Driver Module Off Line
P1235 Buick Fuel Pump Control Out Of Range Possible causes – Faulty Fuel Pump Drive Module (FPDM)– FPDM harness is open or shorted– FPDM circuit poor electrical connection– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1235 Buick Description The P1235 Buick code indicates the Fuel Pump…
P1230 Buick Fuel Pump Low Speed Malfunction
P1231 Buick Injector Circuit Cylinder 4 Intermittent Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous –…
P1231 Buick Injector Circuit Cylinder 4 Intermittent
P1232 Buick Fuel Pump Speed Primary Circuit Malfunction Possible causes Open or shorted low fuel pump (LFP) circuit. Open VPWR to the low speed fuel pump relay. Damaged low speed fuel pump relay. Damaged PCM. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1232 Buick Description The PCM monitors the low speed…
P1232 Buick Fuel Pump Speed Primary Circuit Malfunction
P1233 Buick Fuel Pump Driver Module Off Line Possible causes Inertia fuel shutoff (IFS) switch needs to be reset. Open FPDM ground circuit. Open circuit to FPDM PWR RLY. Open FPDM PWR circuit. Open or shorted FPM circuit (engine should start). Damaged IFS switch. Damaged FPDM PWR RLY. Damaged FPDM. Damaged PCM. Also for Mustang:…
P1233 Buick Fuel Pump Driver Module Off Line
P1234 Buick Fuel Pump Driver Module Off Line Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano –…
P1226 Buick Control Sleeve Sensor Malfunction
P1227 Buick Wastegate Failed Closed (Over Pressure) Possible causes Harness or connectors (The APP sensor 2 circuit is open or shorted.) Accelerator pedal position sensor (Accelerator pedal position sensor 2) What about the obd code? An excessively low voltage from the APP sensor 2 is sent to ECM. Symptoms – Engine Light ON (or Service…
P1227 Buick Wastegate Failed Closed (Over Pressure)
P1228 Buick Injector Circuit Cylinder 3 Intermittent Possible causes Harness or connectors (The APP sensor 2 circuit is open or shorted.) Accelerator pedal position sensor (Accelerator pedal position sensor 2) What about the obd code? An excessively high voltage from the APP sensor 2 is sent to ECM. Symptoms – Engine Light ON (or Service…