Category: Buick

P1168 Buick Closed Loop Control Function Bank 2 Possible causes – Faulty Air Fuel Ratio Sensor 1 Bank 2 – Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted– Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection Tech description What about the obd code? The closed loop control function…

P1162 Buick Air/Fuel Ratio Sensor 1 Circuit Malfunction Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set…

P1163 Buick Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 2 Possible causes – Fualty Front Heated Oxygen Sensor Bank 2– Faulty Front Heated oxygen sensor 1 heater– Fuel pressure– Faulty Fuel Injectors– Intake air leaks Tech description If there are no intake air leaks, the most Possible Causes of the P1163 Buick code is…

P1164 Buick Air/Fuel Ratio Sensor 1 Range/Performance Problem Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set…

P1161 Buick Intake Air Temperature Sensor Open/Short To Positive Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is shorted– Intake Air Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar…

P1157 Buick Air/Fuel Ratio Sensor 1 Range/Performance Problem Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set…

P1158 Buick Air/Fuel Ratio Sensor 1 Terminal Low Voltage Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a…

P1159 Buick Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is…

P1160 Buick Intake Air Temperature Sensor Short To Ground Possible causes – Fualty battery– Faulty Generator/Alternator Control– Alternator harness is open or shorted– Alternator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1160 Buick Description The Engine Control Module (ECM) has detected a voltage range outside operating limits…

P1153 Buick HO2S Insufficient Switching Bank 2 Sensor 1 Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 circuit poor electrical connection What about the obd code? A DTC P1153 Buick…

P1154 Buick HO2S Transition Time Ratio Bank 2 Sensor 1 Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 circuit poor electrical connection What about the obd code? The P1154 Buick…

P1155 Buick Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 2 Sensor 1 Possible causes – Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open or shorted– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection – Faulty Engine Control Module (ECM)…

P1156 Buick Manifold Absolute Pressure Sensor Open/Short To Ground Possible causes – Faulty Manifold Absolute Pressure Sensor– Manifold Absolute Pressure Sensor harness is open or shorted– Manifold Absolute Pressure Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…

P1149 Buick Air/Fuel Ratio Sensor 1 Circuit Range/Performance Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1149 Buick Description The Air/Fuel Ratio (A/F) sensor 1 is installed…

P1150 Buick Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 2 Sensor 1 Possible causes – Faulty Air fuel Ratio (A/F) Bank 2 Sensor 1– Air fuel Ratio (A/F) Bank 2 Sensor 1 harness is open or shorted– Air fuel Ratio (A/F) Bank 2 Sensor 1 circuit poor electrical connection– Fuel pressure– Fuel injector– Intake air…

P1151 Buick Fuel Rail Pressure Malfunction Maximum Positive Deviation Possible causes – Fuel system fault condition– Faulty fuel pressure solenoid– Air in fuel system Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1151 Buick Description The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a…

P1152 Buick Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 Possible causes – Faulty Oxygen Sensor– Fuel pressure high or low– MAF sensor dirty/defective– Vacuum leak on engine– Leaking fuel injector or fuel pressure regulator– Faulty Powertrain Control Module Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1152…

P1146 Buick Heated Oxygen Sensor 2 Minimum Voltage Monitoring Bank 1 Possible causes – Faulty heated oxygen (O2) sensor 2 (rear)– Intake air leaks– Heated oxygen (O2) sensor 2 (rear) harness is open or shorted– Heated oxygen (O2) sensor 2 (rear) circuit poor electrical connection – Inappropriate fuel pressure– Faulty fuel injectors Tech description Replacing…

P1147 Buick Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1 Possible causes – Faulty heated oxygen (O2) sensor 2 (rear)– Intake air leaks– Heated oxygen (O2) sensor 2 (rear) harness is open or shorted– Heated oxygen (O2) sensor 2 (rear) circuit poor electrical connection – Inappropriate fuel pressure– Faulty fuel injectors Tech description Replacing…

P1148 Buick Closed Loop Control Function Bank 1 Possible causes For Models 2005 and up:– Faulty Air Fuel Ratio Sensor 1 Bank 1 – Air Fuel Ratio Sensor 1 Bank 1 circuit is open or shorted– Air Fuel Ratio Sensor 1 Bank 1 circuit electrical connection For Models before 2005:– Faulty Heated Oxygen Sensor 1…