P0141

VAG 1551 Scan Tool Printout:

DTC P0141/16525

Notes:
^ B1 = Bank 1 (right side), S1 = Sensor 1 (front HO2S), B2 = Bank 2 (left side), S2 = Sensor 2 (rear HO2S).

^ O2S heater Z29 is switched on (B+ supplied by fuel pump relay) after engine start when the calculated exhaust temperature exceeds 420°C (788°F) see Read Measuring Value Block (function 08), Display Group 36, display field 1. Ground (GND) to heater Z29 is controlled by the ECM.

^ DTC P0141/16525 is set after engine start when O2S heater current less than 400-720 mA lasts longer than 1 second with the calculated exhaust temperature above 420°C (788°F) and battery voltage is 9-16 volts. Amount of current depends on battery voltage. For minimum current at a specified voltage, see table below:

Battery Voltage/Current Display: