2010 Cadillac CTS Sedan AWD V6-3.0L Page 1922
* The engine is running.
* The DTCs run continuously when the above condition is met.
P2230
* The engine is running.
* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0222, P0223, P1516,
P2135, P2228 and P2229 are not set.
* DTC P2230 runs continuously when the above conditions are met.
Conditions for Setting the DTC
P2227
* Engine running, the ECM detects that the difference between the BARO signal and the calculated BARO is greater than 15 kPa (2.2 psi)
when the vehicle has traveled no more than 0.5 km (0.31 mi) since the last calculated BARO update, or if the difference is greater than 25
kPa (3.6 psi) when the vehicle has traveled greater than 0.5 km (0.31 mi) since the last calculated BARO update.
* Ignition ON, engine OFF, the ECM detects that the BARO pressure is less than 50 kPa (7.3 psi) or greater than 115 kPa (16.7 psi).
P2228
The ECM detects that the BARO sensor voltage is less than 1.95 V for greater than 4 s.
P2229
The ECM detects that the BARO sensor voltage is greater than 4.5 V for greater than 4 s.
P2230
The ECM detects that the difference between the current BARO sensor reading and the previous BARO sensor reading is greater than 10 kPa (1.5
psi) for less than 1 s.
Action Taken When the DTC Sets
DTCs P2227, P2228, P2229, and P2230 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P2227, P2228, P2229, and P2230 are Type B DTCs.
Diagnostic Aids
Inspect the inlet port on the B17 BARO sensor for moisture or debris and attempt to dry or clean the inlet, if contaminated.
Reference Information
Schematic Reference
Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0641 is not set.
