DTC P0141 Cadillac

HO2S Heater Performance Bank 1 Sensor 2

HO2S Heater Performance Bank 1 Sensor 2

Description

P0135, P0141, P0155, or P0161 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, or P2176 are not set. The engine coolant temperature (ECT) is greater than 50°C (122°F). The ignition voltage is between 10-32 V. The engine run time is greater than 300 s. The engine speed is between 500-3,000 RPM. The DTCs run once per drive cycle when the above conditions are met for 120 s.

Cause and Solution

P0141 or P0161
The ECM detects that the HO2S 2 heater current is greater than 2.875 amps, or less than 0.25 amps.

Video Guide

Duration: PT5M12S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: P0141
  • Brand: Cadillac
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