Question about Cadillac Cars & Trucks
...Heater Control Circuit Bank 1 Sensor 1 NO - Go to Step 3 3 Start the engine. With a scan tool, monitor the DTC information for 5 minutes. Are DTCs P0135 and P0155 set? -- YES - Go to DTC P0135 HO2S ...
...Heater Circuit right hand bank. 103 Park/Neutral Position Switch Circuit. 105 EGR and EGR Canister Control Solenoid Valve Circuit. 108 Canister Purge Control Valve Circuit ECU Diagnostic Mode ...
...heater circuit was bad. The fuel pump is whining now its not a bad whine but fuel presser checks out all the way through the system. The rest of the o2 sensors read like they should. Mass airflow ...
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