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Introduction
CORE Diagnostic Trouble Code (DTC) List
DTC P06B1 - Power Supply 5V Sensor 1 Status Not Ok
DTC P06B4 - Power Supply 5V Sensor 2 Status Not Ok
DTC P0102 - Mass Airflow Sensor Circuit Low
DTC P0103 - Mass Airflow Sensor Circuit High
DTC P0107 - Manifold Absolute Pressure Sensor Circuit Low
DTC P0108 - Manifold Absolute Pressure Sensor Circuit High
DTC P0112 - Intake Air Temperature Sensor Circuit Low
DTC P0113 - Intake Air Temperature Sensor Circuit High
DTC P0117 - Engine Coolant Temperature Sensor Circuit Low
DTC P0118 - Engine Coolant Temperature Sensor Circuit High
DTC P0130 - Lambda Bank 1 Sensor 1 Circuit Failure
DTC P0131 - Lambda Bank 1 Sensor 1 Circuit Low
DTC P0132 - Lambda Bank 1 Sensor 1 Circuit High
DTC P0134 - Lambda Bank 1 Sensor Heater Status Not Ok
DTC P0135 - Lambda 1 Sensor Heater Timed Out
DTC P0150 - Lambda Bank 2 Sensor 1 Circuit Failure
DTC P0151 - Lambda Bank 2 Sensor 1 Circuit Low
DTC P0152 - Lambda Bank 2 Sensor 1 Circuit High
DTC P0154 - Lambda Bank 2 Sensor Heater Status Not Ok
DTC P0155 - Lambda 2 Sensor Heater Timed Out
DTC P0178 - Flex Fuel Composition Sensor Circuit Low
DTC P0179 - Flex Fuel Sensor DTc Maximum Frequency
DTC P0227 - Throttle Position 1 Sensor Circuit Low
DTC P0228 - Throttle Position 1 Sensor Circuit High
DTC P0327 - Knock Bank 1 Sensor Circuit Low
DTC P0328 - Knock Bank 1 Sensor Circuit High
DTC P0332 - Knock Bank 2 Sensor Circuit Low
DTC P0333 - Knock Bank 2 Sensor Circuit High
DTC P0511 - Idle Air Control Circuit Failure
DTC P0522 - Oil Pressure Sensor Circuit Low
DTC P0523 - Oil Pressure Sensor Circuit High
DTC P0532 - Air Conditioner Refrigerant Pressure Sensor Circuit Low
DTC P0533 - Air Conditioner Refrigerant Pressure Sensor Circuit High
DTC P0537 - Air Conditioner Refrigerant Temperature Sensor Circuit Low
DTC P0538 - Air Conditioner Refrigerant Temperature Sensor Circuit High
DTC P0562 - Battery Voltage Low
DTC P0563 - Battery Voltage High
DTC P0570 - Front Brake Pressure Below Minimum Threshold
DTC P0571 - Front Brake Pressure Above Maximum Threshold
DTC P0572 - Front Brake Pressure Sensor Circuit Low
DTC P0573 - Front Brake Pressure Sensor Circuit High
DTC P0668 - Internal Thermistor (ECU) Temperature Below Minimum Threshold
DTC P0669 - Internal Thermistor (ECU) Temperature Above Maximum Threshold
DTC P0712 - Transmission Oil Temperature Sensor Circuit Low
DTC P0713 - Transmission Oil Temperature Sensor Circuit High
DTC P0719 - Rear Brake Pressure Below Minimum Threshold
DTC P0720 - Rear Brake Pressure Above Maximum Threshold
DTC P0721 - Rear Brake Pressure Sensor Circuit Low
DTC P0722 - Rear Brake Pressure Sensor Circuit High
DTC P0842 - Transmission Line Pressure Sensor Circuit Low
DTC P0843 - Transmission Line Pressure Sensor Circuit High
DTC P1102 - Mass Airflow Below Minimum Threshold
DTC P1103 - Mass Airflow Above Maximum Threshold
DTC P1107 - Manifold Absolute Pressure Below Minimum Threshold
DTC P1108 - Manifold Absolute Pressure Above Maximum Threshold
DTC P1112 - Intake Air Temperature Below Minimum Threshold
DTC P1113 - Intake Air Temperature Above Maximum Threshold
DTC P1117 - Engine Coolant Temperature Below Minimum Threshold
DTC P1118 - Engine Coolant Temperature above Maximum Threshold
DTC P1122 - Throttle Position 2 Below Minimum Threshold
DTC P1123 - Throttle Position 2 Above Maximum Threshold
DTC P1127 - Acceleration Pedal 1 Sensor Circuit Low
DTC P1128 - Acceleration Pedal 1 Sensor Circuit High
DTC P1129 - Acceleration Pedal 2 Below Minimum Threshold
DTC P1130 - Acceleration Pedal 2 Above Maximum Threshold
DTC P1131 - Lambda Bank 1 Sensor 1 Below Minimum Threshold
DTC P1132 - Lambda Bank 1 Sensor 1 Above Maximum Threshold
DTC P1151 - Lambda Bank 2 Sensor 1 Below Minimum Threshold
DTC P1152 - Lambda Bank 2 Sensor 1 Above Maximum Threshold
DTC P1178 - Flex Fuel Composition Below Minimum Threshold
DTC P1179 - Flex Fuel Composition Above Maximum Threshold
DTC P1226 - Throttle Position 1 Above Maximum Threshold
DTC P1227 - Throttle Position 1 Below Minimum Threshold
DTC P1228 - Barometric Pressure Below Minimum Threshold
DTC P1229 - Barometric Pressure Above Maximum Threshold
DTC P1347 - Nitrous Pressure Sensor Circuit Low
DTC P1348 - Nitrous Pressure Sensor Circuit High
DTC P1350 - Dome (CO₂) Pressure Below Minimum Threshold
DTC P1351 - Dome (CO₂) Pressure Above Maximum Threshold
DTC P1360 - Dome (CO₂) Pressure Sensor Circuit Low
DTC P1361 - Dome (CO₂) Pressure Sensor Circuit High
DTC P1362 - Fuel Pressure Below Minimum Threshold
DTC P1363 - Fuel Pressure Above Maximum Threshold
DTC P1364 - Fuel Pressure Sensor Circuit Low
DTC P1365 - Fuel Pressure Sensor Circuit High
DTC P1366 - Nitrous Pressure Below Minimum Threshold
DTC P1367 - Nitrous Pressure Above Maximum Threshold
DTC P1522 - Oil Pressure Below Minimum Threshold
DTC P1523 - Oil Pressure Above Maximum Threshold
DTC P1532 - Air Conditioner Refrigerant Pressure Below Minimum Threshold
DTC P1533 - Air Conditioner Refrigerant Pressure Above Maximum Threshold
DTC P1537 - Air Conditioner Refrigerant Temperature Below Minimum Threshold
DTC P1538 - Air Conditioner Refrigerant Temperature Above Maximum Threshold
DTC P1712 - Transmission Oil Temperature Below Minimum Threshold
DTC P1713 - Transmission Oil Temperature Above Maximum Threshold
DTC P1842 - Transmission Line Pressure Below Minimum Threshold
DTC P1843 - Transmission Line Pressure Above Maximum Threshold
DTC P2109 - Electronic Throttle Override
DTC P2122 - Throttle Position 2 Sensor Circuit Low
DTC P2123 - Throttle Position 2 Sensor Circuit High
DTC P2129 - Acceleration Pedal 1 Below Minimum Threshold
DTC P2130 - Acceleration Pedal 1 Above Maximum Threshold
DTC P2132 - Acceleration Pedal Position 2 Sensor Circuit Low
DTC P2133 - Acceleration Pedal Position 2 Sensor Circuit High
DTC P2228 - Barometric Pressure Sensor Circuit Low
DTC P2229 - Barometric Pressure Sensor Circuit High
CORE Inputs & Ouputs
Backfire Diagnostics
Cuts-out & Misses Diagnostics
Fuel System Diagnostics
Hard Start Diagnostics
Hesitation Diagnostics
Intermittent Diagnostics
No Start Diagnostics
CORE Diagnostic Manual >
DTC P0721 - Rear Brake Pressure Sensor Circuit Low
Conditions for setting dtc P0721
￭
Engine Running
￭
Rear Brake Pressure Sensor ≤ 0.1 volts
￭
The above must be present for a period of 128 instances/cycles or greater to trigger DTC P0721
