P0037 JEEP O2 Sensor 1/2 Heater Circuit Low

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection– Faulty Engine Control Module (ECM) Tech description The code…

P0038 JEEP O2 Sensor 1/2 Heater Circuit High

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd…

P0155 JEEP O2 Sensor 2/1 Heater Performance

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit fuse– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection – Faulty Engine Control Module (ECM) Tech…

P0051 JEEP O2 Sensor 2/1 Heater Circuit Low

Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 harness is open shorted– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 circuit poor electrical connection– Heated Oxygen Sensor (H2OS) Bank 2 Sensor 1 fuse– Faulty Engine Control Module (ECM) Tech description The code means…

P0627 JEEP Fuel Pump Relay Control Circuit

Possible causes – Faulty fuel pump relay– Fuel pump harness is open or shorted– Fuel pump circuit poor electrical connection– Faulty fuel pump control module (if applicable) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0627 JEEP OBD Code Description The Engine Control Module (ECM) has detected an open or short in…

P0088 JEEP Fuel Rail Pressure Signal Is Above Maximum Limit

Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the obd code mean? The Engine Control Module (ECM) ECM has detected that the fuel pressure is above a calibrated value Symptoms…

P0087 JEEP Fuel Rail Pressure Malfunction Pressure Too Low

Possible causes – Faulty fuel pump– Blocked fuel filter– Faulty fuel pressure sensor– Fuel pressure sensor harness is open or shorted– Fuel pressure sensor electrical circuit poor connection– Faulty Fuel injector When is the obd code mean? The Engine Control Module (ECM) has determined that the fuel rail pressure is too low for a specific…

P0253 JEEP Fuel Quantity Solenoid Circuit Short To Ground

Possible causes – Faulty Fuel Quantity Solenoid– Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected a short to ground condition on the Fuel Quantity Solenoid circuit Symptoms – Engine Light ON (or Service Engine Soon…

P0252 JEEP Injection Pump Fuel Metering Control A Range/Performance

Possible causes – Faulty Fuel Quantity Solenoid– Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected an excessive current condition on the Fuel Quantity Solenoid Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P0251 JEEP Fuel Quantity Solenoid Open Or Short Circuit Condition

Possible causes – Faulty Fuel Quantity Solenoid– Fuel Quantity Solenoid harness is open or shorted– Fuel Quantity Solenoid circuit poor electrical connection When is the obd code mean? The Engine Control Module (ECM) has detected an open or excessive current on the Fuel Quantity Solenoid circuit Symptoms – Engine Light ON (or Service Engine Soon…