Cadillac XT4 Fault Codes
You can find common Cadillac XT4 fault codes on this page that when clicked take you to a detailed description.
You can also type in the fault code you are getting below to find a more detailed description.
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Cadillac XT4 Recalls
When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.
You can check to see if your Cadillac XT4 has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Cadillac XT4 Recalls »
Common XT4 Fault Codes
These are the most common XT4 fault codes that people are searching for.
Evaporative Emission Control System Incorrect Purge flowLearn More Fixes
Catalyst System Efficiency Below Threshold (Bank 2)Learn More Fixes
Secondary Air Injection System MalfunctionLearn More
Secondary Air Injection System Incorrect Flow DetectedLearn More Fixes
System Too Lean (Bank 2)Learn More Fixes
Cooling Fan 1 Control Circuit MalfunctionLearn More
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
System Too Lean (Bank 1)Learn More Fixes
Evaporative Emission System High Purge FlowLearn More Fixes
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
Invalid Data Received From ECM/PCMLearn More
Evaporative Emission Control System Vent Valve/Solenoid Circuit MalfunctionLearn More Fixes
Evaporative Emission Control System Leak DetectedLearn More Fixes
Camshaft Position Sensor Circuit MalfunctionLearn More Fixes
Cylinder 1 Misfire DetectedLearn More Fixes
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
System Gross Leak Evaporative EmissionLearn More Fixes
Transmission Control System MalfunctionLearn More Fixes
Transmission Fluid Pressure Sensor/Switch E Circuit LowLearn More
Intake Air Temperature (IAT) Sensor Circuit Intermittent Low VoltageLearn More
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)Learn More Fixes
Fuel Pump Speed Control Circuit MalfunctionLearn More
Camshaft Position Sensor Circuit Range/PerformanceLearn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor BLearn More Fixes
Camshaft Position B - Timing Over-Advanced or System Performance (Bank 2)Learn More
Mass or Volume Air Flow Circuit Low Voltage InputLearn More Fixes
Catalyst System Efficiency Below Threshold (Bank 1)Learn More Fixes
Cylinder 6 Misfire DetectedLearn More Fixes
Engine Position System Performance - Bank 1Learn More
Mass or Volume Air flow Circuit Range/Performance ProblemLearn More Fixes
Control Module Power Circuit Low/High VoltageLearn More
Passenger Door Ajar Circuit FailureLearn More
Evaporative Emission Control System MalfunctionLearn More Fixes
Input/Turbine Speed Sensor Circuit No SignalLearn More
Intake Camshaft Position Timing - Over-Advanced (Bank 2)Learn More Fixes
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
Lost Communication With Anti-Lock Brake System (ABS) Control ModuleLearn More
SCP (J1850) Invalid or Missing Data for Vehicle ConfigurationLearn More
Control Module Communication Bus "A" OffLearn More Fixes
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
Lost Communication With Body Control ModuleLearn More
Pedal Correlation PDS1 and PDS2Learn More
MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER AbortedLearn More
A/C Compressor Temperature Sensor MalfunctionLearn More
Ignition 1 Switch Circuit 2Learn More
Internal Voltage Regulator MalfunctionLearn More
Data Output Link Circuit FailureLearn More
Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit MalfunctionLearn More
HO2S Insufficient Switching Bank 2 Sensor 1Learn More
Intake Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Retarded (Bank 1)Learn More Fixes
Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor ALearn More Fixes
Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2Learn More Fixes
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance ProblemLearn More Fixes
Intake Air Temperature Circuit High InputLearn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)Learn More Fixes
System Too Rich (Bank 1)Learn More Fixes
System Too Rich (Bank 2)Learn More Fixes
Random/Multiple Cylinder Misfire DetectedLearn More Fixes
Cylinder 2 Misfire DetectedLearn More Fixes
Cylinder 3 Misfire DetectedLearn More Fixes
Cylinder 4 Misfire DetectedLearn More Fixes
Cylinder 5 Misfire DetectedLearn More Fixes
Knock Sensor 1 Circuit (Bank 2 or Single Sensor)Learn More Fixes
Knock Sensor 2 Circuit Low Input (Bank 2)Learn More Fixes
Crankshaft Position Sensor A Circuit MalfunctionLearn More Fixes
Exhaust Gas Recirculation Flow Insufficient DetectedLearn More Fixes
Evaporative Emissions System Small Leak DetectedLearn More Fixes
Fuel Level Sensor Circuit High InputLearn More Fixes
Idle Control System RPM higher Than ExpectedLearn More Fixes
- Manufacturer: Cadillac
About the XT4
The XT4, also known as the Crossover Touring 4, first hit the market in 2018. Of course, only a single generation has been released since then.
The model is currently produced and sold in both the United States and China.
As its name suggests, it sits below both the XT5 and XT6 in the Cadillac lineup. Competition from outside of the family typically comes from the likes of the BMW X1, Mercedes-Benz GLB-Class, and the hugely popular Volvo XC40.
Models produced in 2019 are notorious for suffering the fault code P0441. This code is logged when there is incorrect purge flow during a non-purge flow condition in the EVAP system. This resulted in a technical service bulletin (TSB) being issued.
As per the TSB, this code will be caused by a faulty capacitor in the purge pump printed circuit board. The bulletin goes on to state that dealers need to replace the emission purge pump to fix this issue under warranty.
Another common issue for the model is P0430. This code indicates that the second catalytic converter is not performing correctly.
This code is often caused by wear and tear, particularly on higher-mileage models. It can also be caused by exhaust leaks upstream of the catalytic converter in the second bank of the engine, as well as faulty oxygen sensors.
Fault code P0410 is also a common problem. This code is logged when the powertrain control module has detected a malfunction from the secondary air injection system.
Thankfully, this code is not a severe problem, meaning owners can fix it somewhat at their leisure. This helps given the broad nature of the code.