DTC B1900 Honda
HO2S Circuit Low Voltage Sensor 1
HO2S Circuit Low Voltage Sensor 1
Description
P0131 Lean Test Enable DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set. The Loop Status parameter is Closed. The Ignition 1 Signal parameter is between 10-18 volts. The Fuel Level Sensor parameter is more than 10 percent. The Throttle Position (TP) Indicated Angle parameter is between 15-50 percent. DTC P0131 runs the lean test continuously when the above conditions are met for 2 seconds. P0131 Power Enrichment Test Enable DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set. The Ignition 1 Signal parameter is between 10-18 volts. The Fuel Level Sensor parameter is more than 10 percent. The Engine Run Time parameter is more than 30 seconds. DTC P0131 runs the power enrichment test continuously when the above conditions are met for 2 seconds.
Cause and Solution
P0131 Lean TestThe ECM detects that the HO2S 1 Voltage parameter is less than 50 mV.DTC P0131 sets within 100 seconds during the lean test when the above condition is met.P0131 Power Enrichment TestThe ECM detects that the HO2S 1 Voltage parameter is less than 800 mV.DTC P0131 sets within 100 seconds during the power enrichment test when the above condition is met.
Video Guide
Diagnostic Info
- DTC Code: B1900
- Brand: Honda