OBDII Error Codes
Everything pertaining to OBDII diagnostics and error code reading and troubleshooting.
132 Cummins articles in this category
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P0016 ENGINE SPEED SIGNAL MISMATCH (DIESEL) When Monitored and Set Condition When Monitored: While Engine is running. Set Condition: When the engine speed detected by the Engine Position Sensor (cam) and the Engine Speed Sensor (crank) differ by a specified RPM amount. POSSIBLE CAUSES DAMAGE TO THE ESS OR EPS MECHANICAL MISALIGN
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P0071 INLET AIR TEMPERATURE SENSOR RATIONALITY (DIESEL) When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: The ECM does not read a change in value from the sensor over time. POSSIBLE CAUSES INLET AIR TEMPERATURE SENSOR INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE &
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P0072 INLET AIR TEMP SENSOR VOLTAGE TOO LOW (DIESEL) When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time. POSSIBLE CAUSES SENSOR OUT OF SPEC INTERMITTENT CONDITION&
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P0073 INLET AIR TEMP SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: With ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time. POSSIBLE CAUSES DTC RETURNS INLET AIR TEMPERATURE SENSOR
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P0088 FUEL RAIL PRESSURE SIGNAL IS ABOVE MAX LIMIT When Monitored and Set Condition: When Monitored: Engine running. Set Condition: Fuel pressure is above a calibrated value for a calibrated amount of time. POSSIBLE CAUSES FUEL CONTROL ACTUATOR (FCA) FUEL PRESSURE SENSOR INTERMITTENT CONDITION &#
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P0106 INLET AIR PRESSURE SENSOR RATIONALITY When Monitored and Set Condition: When Monitored: When the ignition is on. Set Condition: The Inlet air pressure is above a calibrated threshold. POSSIBLE CAUSES INLET AIR PRESSURE SENSOR INTERMITTENT CONDITION TROUBLESHOOT OTHER DTC'S FIRST DIAGNOSTIC PROCEDURE
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P0107 INLET AIR PRESSURE SENSOR VOLTAGE TOO LOW When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time. POSSIBLE CAUSES OTHER DTC'S PRESENT INLET AIR PRESSURE SENSOR&#
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P0108 INLET AIR PRESSURE SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time. POSSIBLE CAUSES OTHER DTC'S PRESENT INLET AIR PRESSURE SENSOR
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P0111 INTAKE AIR TEMPERATURE (IAT) SENSOR RATIONALITY When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: The ECM does not read a change in value from the sensor over time. POSSIBLE CAUSES FAILED IAT SENSOR INTERMITTENT CONDITION DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICA
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P0112 INTAKE AIR TEMPERATURE (IAT) SENSOR VOLTAGE TOO LOW When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time. POSSIBLE CAUSES INTAKE AIR TEMP SENSOR OUT OF SPEC IN
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P0113 INTAKE AIR TEMPERATURE (IAT) SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: With ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time. POSSIBLE CAUSES FAILED SENSOR INTERMITTENT CONDITION
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P0116 ENGINE COOLANT TEMPERATURE (ECT) SENSOR RATIONALITY When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: The ECM does not read a change in value from the sensor over time. POSSIBLE CAUSES LOW COOLANT LEVEL COOLANT TEMPERATURE SENSOR THERMOSTAT
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P0117 ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGE TOO LOW When Monitored and Set Condition: When Monitored: With ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time. POSSIBLE CAUSES COOLANT TEMPERATURE SENSOR INTERMITTE
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P0118 ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: With ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time. POSSIBLE CAUSES COOLANT TEMPERATURE SENSOR INTERMITTENT
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P0122 TPS/APPS LOW When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: This DTC will set if the monitored TPS voltage drops below .078 volts for the period of 0.48 seconds. POSSIBLE CAUSES RELATED TPS ENGINE DTC'S PRESENT POWERTRAIN CONTROL MODULE
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P0123 TPS/APPS HIGH When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: This DTC will set if the monitored TPS voltage rises above 4.94 volts for the period of 0.48 seconds. POSSIBLE CAUSES RELATED TPS ENGINE DTC'S PRESENT POWERTRAIN CONTROL MODULE
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P0124 TPS/APPS INTERMITTENT When Monitored and Set Condition: When Monitored: Continuously with the ignition on and engine running. Set Condition: This DTC will set if the monitored TPS throttle angle between the angles of 6° and 120° and the degree change is greater than 5° within a period of less than 7.0 ms. POSSIBLE CAUSES RELATED TPS ENGINE DTC'S PRESENT&#
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P0128 THERMOSTAT RATIONALITY When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: The coolant temperature does not rise by a calibrated amount over a calibrated amount of time. POSSIBLE CAUSES COOLING FAN COOLANT TEMPERATURE SENSOR THERMOSTAT DIAGN
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P0148 HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: A deviation between the fuel pressure set point and the actual fuel pressure. POSSIBLE CAUSES OTHERS DTC'S PRESENT FUEL LEAKS FUEL CONTROL ACTUATOR
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P0169 WATER IN FUEL (WIF) LIGHT ON TOO LONG When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: Water in fuel light was on for a calibrated amount of time. POSSIBLE CAUSES OTHER DTCS PRESENT WATER IN FUEL DIAGNOSTIC PROCEDURE NOTE: Refer to VERIFICATION TESTS for appropriat
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P0192 FUEL PRESSURE SENSOR VOLTAGE TOO LOW When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time. POSSIBLE CAUSES OTHER DTC'S FUEL PRESSURE SENSOR
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P0193 FUEL PRESSURE SENSOR VOLTAGE TOO HIGH When Monitored and Set Condition: When Monitored: With the ignition on and battery voltage greater than 10.4 volts. Set Condition: The circuit voltage to the ECM is above a calibrated threshold for a certain period of time. POSSIBLE CAUSES OTHER DTC'S FUEL PRESSURE SENSOR
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P0201 INJECTOR #1 CONTROL CIRCUIT NOTE: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0201-INJECTOR #1 CONTROL CIRCUIT. When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: When the injector current falls below a calibrated threshold. POSSIBLE CAUSES
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P0202 INJECTOR #2 CONTROL CIRCUIT NOTE: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0202-INJECTOR #2 CONTROL CIRCUIT. When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: When the injector current falls below a calibrated threshold. POSSIBLE CAUSES
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P0203 INJECTOR #3 CONTROL CIRCUIT NOTE: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0203-INJECTOR #3 CONTROL CIRCUIT. When Monitored and Set Condition: When Monitored: While the engine is running. Set Condition: When the injector current falls below a calibrated threshold. POSSIBLE CAUSES
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