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Home >> Honda >> 2019 >> Ridgeline RT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Advanced Diagnostics (P1684 - U129E) >> Advanced Diagnostics >> DTC P2651 (2024 2025) >> Enable Conditions

Enable Conditions

Condition Minimum Maximum
Elapsed time after cylinder pausing 2.0 seconds -
Elapsed time until VPS can be allowed its initial operation 5.0 seconds* -
5.0 seconds**
Elapsed time after reversion from low oil pressure condition 5.0 seconds -
Engine coolant temperature [ECT SENSOR 1] 167 deg.F (75 deg.C) -
Estimated rear WU-TWC temperature 1,022 deg.F (550 deg.C) -
Estimated front WU-TWC temperature - 1,562 deg.F (850 deg.C)
Estimated front WU-TWC seal mat temperature - 1,562 deg.F (850 deg.C)
Engine speed [ENGINE SPEED] 1,200 rpm 3,300 rpm
Engine speed [ENGINE SPEED] that can be operated in VPS by uncontrolled the oil pressure 510 rpm*** -
1,320 rpm****
Oil pressure 83 kPa (523 mmHg, 24.6 inHg) -

*: When starting the engine at an engine coolant temperature [ECT SENSOR 1] is 68 deg.F (20 deg.C)

**: When starting the engine at an engine coolant temperature [ECT SENSOR 1] is 176 deg.F (80 deg.C)

***: When the engine coolant temperature [ECT SENSOR 1] is 172 deg.F (78 deg.C)

****: When the engine coolant temperature [ECT SENSOR 1] is 221 deg.F (105 deg.C)

[ ]: HDS Parameter

Condition Minimum Maximum
Vehicle speed [VEHICLE SPEED] 12 mph (19 km/h) -
Fuel feedback Closed loop at stoichiometric
Throttle position Other than wide open throttle
Other than fully closed
Monitoring priority P0139, P0159, P0401, P2A00, P2A03

*: When starting the engine at an engine coolant temperature [ECT SENSOR 1] is 68 deg.F (20 deg.C)

**: When starting the engine at an engine coolant temperature [ECT SENSOR 1] is 176 deg.F (80 deg.C)

***: When the engine coolant temperature [ECT SENSOR 1] is 172 deg.F (78 deg.C)

****: When the engine coolant temperature [ECT SENSOR 1] is 221 deg.F (105 deg.C)

[ ]: HDS Parameter