Questions & Answers for: dtc p1646

P1646 and P0706 were read. Seems likely it is just a transmission cable adjustment needed. Please see my whole note (not a musical whole note) above under Clarification... I'd go to this site and read

...DTC P1646 code, bank1 sensor1 oxygen sensor failure. My question is two part; first where is the sensor located on my car and two which sensor shoud I buy? There appear to be two types of sensors, ...

DTC P0155 is set, measure voltage between ground and terminal No. 4 (Yellow/Red wire) at ECM harness E10. Voltage should be 9-14 volts at each terminal. If voltage is as specified, replace ECM. If not

P1646 Indicates a Power-train fault The fault is generally due to a problem in the Computer & Output Circuit area Fault Description:ECM HO2 Sensor control malfunction -bank 1 upstream (1/1) Action

P1646 Indicates a Power-train fault The fault is generally due to a problem in the Computer & Output Circuit area Fault Description:ECM HO2 Sensor control malfunction -bank 1 upstream (1/1) Action

P1646 Indicates a Power-train fault The fault is generally due to a problem in the Computer & Output Circuit area Fault Description:ECM HO2 Sensor control malfunction -bank 1 upstream (1/1) Action

...DTC P1001 Key on engine running unable to complete; key on engine running aborted P1100 Mass air flow sensor intermittent P1101 Mass air flow sensor out of self test range P1104 Mass Airflow (MAF) ...