Tag: VOLVO

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

Possible causes – Faulty spark plug 6– Clogged or faulty fuel injector 6– Faulty ignition coil 6– Fuel injector 6 harness is open or shorted– Fuel injector 6 circuit poor electrical connection– Ignition coil 6 harness is open or shorted– Ignition coil 6 circuit poor electrical connection– Insufficient cylinder 6 compression– Incorrect fuel pressure– Intake…

Possible causes – Faulty Speed Sensor– Speed Sensor harness is open or shorted– Speed Sensor circuit poor electrical connection When is the obd code mean? The output shaft speed sensor failed to provide a signal to the Transmission Control Module (TCM) upon initial movement of vehicle. Symptoms – Engine Light ON (or Service Engine Soon…

Possible causes – Faulty Manifold Absolute Pressure sensor– Manifold Absolute Pressure harness is open or shorted– Manifold Absolute Pressure sensor circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? An excessively low voltage from the sensor is sent to ECM Symptoms – Engine Light ON (or Service Engine Soon…

Possible causes – Faulty mass air flow sensor– Intake air leaks– Dirty mass air flow sensor– Dirty mass air filter– Mass air flow sensor harness is open or shorted– Mass air flow sensor circuit poor electrical connection Tech description Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air…

Possible causes – Faulty Park/Neutral Position Switch– Misadjusted Park/Neutral Position Switch– Park/Neutral Position Switch harness is open or shorted– Park/Neutral Position Switch circuit poor electrical connection When is the obd code mean? The transmission range switch detects the selector lever position and sends a signal to the TCM. Symptoms – Engine Light ON (or Service…

Possible causes – Faulty Rear O2 Sensor– Rear O2 Sensor harness is open or shorted– Rear O2 Sensor circuit poor electrical connection– Intake leak Tech description The code means that the sensor is not reading properly. Before replacing the sensor check for intake vacuum leaks. Intake vacuum leaks can cause an improper O2 sensor reading….

Possible causes – Faulty spark plug 1– Clogged or faulty fuel injector 1– Faulty ignition coil 1– Fuel injector 1 harness is open or shorted– Fuel injector 1 circuit poor electrical connection– Ignition coil 1 harness is open or shorted– Ignition coil 1 circuit poor electrical connection– Insufficient cylinder 1 compression– Incorrect fuel pressure– Intake…

Possible causes – Faulty spark plug 2– Clogged or faulty fuel injector 2– Faulty ignition coil 2– Fuel injector 2 harness is open or shorted– Fuel injector 2 circuit poor electrical connection– Ignition coil 2 harness is open or shorted– Ignition coil 2 circuit poor electrical connection– Insufficient cylinder 2 compression– Incorrect fuel pressure– Intake…

Possible causes – Faulty spark plug 3– Clogged or faulty fuel injector 3– Faulty ignition coil 3– Fuel injector 3 harness is open or shorted– Fuel injector 3 circuit poor electrical connection– Ignition coil 3 harness is open or shorted– Ignition coil 3 circuit poor electrical connection– Insufficient cylinder 3 compression– Incorrect fuel pressure– Intake…