Category: OBDii Powertrain Codes

P1501 Vehicle Speed Sensor Circuit Intermittent

P1502 Theft Deterrent System – No Password Received

P1503 Theft Deterrent Fuel Enable Signal Not Correct

P1504 Intake Air Control Circuit Malfunction Possible causes – Idle Air Control Valve harness is open or shorted– Idle Air Control Valve circuit poor electrical connection– Faulty Idle Air Control Valve Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1504 Description The Idle Air Control Valve (IACV) is used to control engine…

P1505 Idle Air Control System At Adaptive Clip Possible causes – Engine Light ON (or Service Engine Soon Warning Light) Tech description – Faulty Idle Speed Control Actuator (ISCA) valve– Idle Speed Control Actuator (ISCA) valve harness is open or shorted– Idle Speed Control Actuator (ISCA) valve circuit poor electrical connection P1505 Description The Idle…

P1494 EVAP Leak Detection Pump Pressure Switch Condition Possible causes – Leak Detection Pump (LDP) harness is open or shorted – Leak Detection Pump (LDP) poor electrical connection – Faulty Leak Detection Pump (LDP) What about the obd code? Malfunction is detected when the Powertrain Control Module (PCM) detected the leak detection pump switch did…

P1495 EVAP Leak Detection Pump Solenoid Circuit Condition Possible causes – Leak Detection Pump (LDP) harness is open or shorted – Leak Detection Pump (LDP) poor electrical connection – Faulty Leak Detection Pump (LDP) What about the obd code? Malfunction is detected when the Powertrain Control Module (PCM) detected the pump solenoid did not change…

P1490 Vacuum Cut Valve Bypass Valve Possible causes – Faulty Vacuum Cut Valve Bypass Valve– Clogged vacuum hoses to the Vacuum Cut Valve Bypass Valve– Vacuum cut valve bypass valve harness is open or shorted– Vacuum cut valve bypass valve electrical circuit poor connection What about the obd code? – An improper voltage signal is…

P1491 Exhaust Gas Recirculation Valve Insufficient Lift Possible causes – Vacuum cut valve bypass valve – Vacuum cut valve – Bypass hoses for clogging – EVAP control system pressure sensor and circuit – EVAP canister vent control valve – Hose between fuel tank and vacuum cut valve clogged – Hose between vacuum cut valve and…

P1492 APLSOL Solenoid Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1493 5V Supply Output Too Low

P1482 SCP Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1483 Power To Fan Circuit Overcurrent Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1484 Open Power To Ground VCRM Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1485 EGRV Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1486 EVAP System Pinched Hose Found Possible causes – Leak Detection Pump (LDP) pressure hose obstructed – Faulty Leak Detection Pump (LDP) – Obstructed hose – EVAP canister obstructed What about the obd code? Malfunction is detected when during system monitor test the Powertrain Control Module (PCM) detected a pinched EVAP hose Symptoms – Engine…

P1487 Catalyst Temp Sens Circ Shorted Low

P1489 Catalytic Conv Overheat Detected

P1475 Fan Relay (Low) Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1477 Additional Fan Relay Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)