How Does a Mechanic Diagnose the P2626 Code?Ī mechanic may use a variety of methods to diagnose a P2626 code, including:
The symptoms of a P2626 code may include: Faulty or blown fuse for the oxygen sensor.Damaged or defective oxygen sensor electrical connectors.Damaged, defective, shorted, or open sensor harness.Damaged or defective oxygen bank 1 sensor 1.The P2626 code is caused by a number of possible issues, including: A damaged sensor can cause the air/fuel mixture to be too rich or too lean for the engine’s needs. The ECM uses the signals from the oxygen sensor to monitor if the air and fuel mixture is too rich or too lean and increases or decreases the fuel injection duration.
When the voltage signal variance exceeds 10%, either high or low, the ECM will store a P2626 code. It could also be due to an oxygen sensor reading being lower than allowed variances. After reaching normal operating temperature and the ECM reaches closed-loop operations, upstream heater oxygen sensor readings should vary consistently from 100 to 900 millivolts. This typically means the engine block contained the number 1 cylinder is impacted and a fault has been found in the sensor ahead of the catalytic converter (upstream sensor or sensor 1). If a P2626 code appears, your vehicle’s ECM has received a voltage signal from oxygen sensor number 1 pumping current trim circuit for bank 1 that is not within the accepted variances.
Secondary Air Injection not bypassed during Self-Test.ĮCT Indicated -40 C (-40 F) /circuit open. Secondary Air Injection upstream during Self-Test. Secondary Air Injection system Inoperative (right side).
HO2S circuit indicates system rich (right HO2S). HO2S circuit indicates system lean (right HO2S). Insufficient input from the Vehicle Speed Sensor (VSS). IDM circuit failure/ SPOUT circuit grounded.ĮCT out of Self-Test range MAP/BARO out of Self-Test range. Data Link Connector (DLC)(Located Under hood)Īnalog Voltmeter Connection Ford Codes 11Ĭannot control rpm during KOER Sell-Test high rpm check.Ĭannot control rpm during KOER Self-Test low rpm check.