2010 Cadillac CTS Sedan AWD V6-3.6L Page 852
* Before the ECM can reports that DTC P013A, P013C, P013E, or P014A failed, DTCs P0030, P0031, P0032, P0050, P0051, P0052, P0135,
and P0155 must run and pass.
* DTC P0036, P0037, P0038, P056, P0057, P0058, P0137, P0138, P0140, P0141, P0157, P0158, P0160, P0161, P0300, P0301, P0302, P0303,
P0304, P0305, P0306, P0442, P0443, P0455, P0458, P0459, P2096, P2097, P2098, P2099, P2177, P2178, P2179, P2088, P2089, P2090,
P2232, P2235, P2270, P2271, P2272, or P2273 is not set.
* The ignition voltage is greater than 10 volts.
* The HO2S 1 and 2 are in closed loop.
* The HO2S 2 resistance is less than 900 ohms.
* The HO2S 2 has switched from lean to rich during the ignition cycle.
* The calculated exhaust gas mass flow rate is greater than 2.22 g/s.
* The calculated exhaust gas temperature for HO2S 2 is warmer than 450掳C (842掳F).
* The HO2S 1 signal voltage is less than 141 mV
* The HO2S 2 signal voltage is greater than 590 mV at the beginning of decel fuel cut-off - DTC P013E and P014A only.
* The DTCs run continuously once the conditions above exist for greater than 4 seconds.
Conditions for Setting the DTCs
P013A or P013C
The ECM determines that the response time for the HO2S 2 to switch from greater than 400 mV to less than 200 mV is greater than 800 mS. The
condition exists for greater than 4 seconds or for a cumulative time of 30 seconds.
P013E or P014A
* The ECM determines the time for the HO2S 2 to transition from greater than 590 mV to less than 140 mV, during decel fuel cut-off is greater
than 4 seconds. The condition exists for greater than 4 seconds or for a cumulative time of 30 seconds.
OR
* The ECM determines that the air flow into the engine exceeded 15 grams before the HO2S 2 transitions to less than 140 mV, during decel
fuel cut-off. The condition exists for greater than 4 seconds or for a cumulative time of 30 seconds.
Action Taken when the DTCs Set
DTCs P013A, P013C, P013E, and P014A are Type B DTCs.
Conditions for Clearing the MIL/DTCs
DTCs P013A, P013C, P013E, and P014A are Type B DTCs.
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 scan tool DTC information. Verify no other DTC is set.
瀚慖f any other DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic
Trouble Code (DTC) List - Vehicle).
2. Engine idling, observe the appropriate scan tool HO2S voltage parameter. The voltage should fluctuate above and below the range of
