What is the fault code for redundancy check of Beiqi x7 sensor?

2. 1 p 0121(me797)/p1542 (Passat 2.0l) electronic throttle position sensor1signal is unreasonable. Operating conditions: engine running, vehicle running. Fault condition: The signal of position sensor 1 is judged to be unreasonable under any of the following two conditions. In the case of 1, the system only finds that the deviation exceeds the limit when synchronously checking the position signals W 1 and W2, and the difference between W 1 and W3 is greater than that between W2 and W3; In case 2, when the system operates with the reference position signal W3, it is found that the difference between the position signal W 1 and W3 is greater than the set value (about 10%)0 (note: W3 is the throttle opening signal determined by the intake air volume and the rotational speed). Repair conditions: the position signal voltage P 1 is within a reasonable range. Failure mode: position signal voltage P2 is used for substitution calculation and W3 is used for redundancy check. 2.2p0 1 22 (me797)/p1543 (Passat 2.0l) electronic throttle position sensor1signal circuit voltage is too low working condition: turn on the ignition switch. Fault condition: the position signal P 1 is less than 0.2 v. Repair condition: the position signal voltage P 1 is greater than the set value (0.2v). Failure mode: position signal voltage P2 is used for substitution calculation and W3 is used for redundancy check. 2.3p0 1 23 (me797)/p1544 (Passat 2.0l) electronic throttle position sensor1signal circuit voltage is too high. Working condition: turn on the ignition switch. Fault condition: the position signal P 1 is greater than 4.8 v. Repair condition: the position signal voltage P 1 is less than the set value (4.8V). Failure mode: position signal voltage P2 is used for substitution calculation and W3 is used for redundancy check.