Tag: CADILLAC

P1112 CADILLAC Intake Air Temperature Sensor Circuit Intermittent Low Voltage

Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is open or shorted– Intake Air Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1112 CADILLAC OBD Code Description The Intake Air Temperature (IAT) sensor contains a semiconductor device which changes resistance based…

P0357 CADILLAC Ignition Coil 7 Control Circuit

Possible causes – Faulty Ignition Coil 7– Ignition Coil 7 harness is open or shorted– Ignition Coil 7 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the obd code mean? Each ignition circuit is continuously monitored by the Powertrain Control Module (PCM). The test fails when the PCM does not receive a…

P0358 CADILLAC Ignition Coil 8 Control Circuit

Possible causes – Faulty Ignition Coil 8– Ignition Coil 8 harness is open or shorted– Ignition Coil 8 circuit poor electrical connection– Faulty Powertrain Control Module (PCM) When is the obd code mean? Each ignition circuit is continuously monitored by the Powertrain Control Module (PCM). The test fails when the PCM does not receive a…

P2534 CADILLAC Ignition Switch Run/Start Position Circuit Low

Possible causes – Faulty Ignition Switch– Ignition Switch harness is open or shorted– Ignition Switch circuit poor electrical connection Tech description This DTC is caused by low Ignition 1 voltage at the TCM. When diagnosing this DTC be sure to inspect the wire harness from the underhood fuse block to the TCM, especially in the…

B1380 CADILLAC Device Ignition Accessory Circuit Open

Possible causes – Faulty Ignition Switch– Ignition Switch harness is open or shorted– Ignition Switch circuit poor electrical connection When is the obd code mean? Whne the BCM detects a short to ground in the circuit or a short to battery or an open in the circuit when the switch is in the OFF position….

P1682 CADILLAC Ignition 1 Switch Circuit 2

Possible causes – Faulty ignition switch– Ignition Switch harness is open or shorted– Ignition Switch circuit poor electrical connection– Faulty Engine Control Module (ECM) When is the obd code mean? The ECM has detected a voltage deifference between two circuits Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Possible no crank or…

P0654 CADILLAC Engine Speed Output Circuit

Possible causes – Faulty Instrument Cluster– Instrument Cluster harness is open or shorted– Instrument Cluster circuit poor electrical connection– Faulty PCM When is the obd code mean? If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the P0654 code will set. Symptoms – Engine Light…

U0141 CADILLAC Lost Communication With Instrument Panel Module

Possible causes – Faulty Instrument Panel Module (IPM)– IPM harness is open or shorted– IPM circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) U0141 CADILLAC OBD Code Description Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications…