Problem in Start Clutch System
Table of contents
P1891 HONDA Possible Causes
- Faulty CVT Speed Sensor
- CVT Speed Sensor harness is open or shorted
- CVT Speed Sensor circuit poor electrical connection
- Faulty Driven Pulley Speed Sensor
- Driven Pulley Speed Sensor harness is open or shorted
- Driven Pulley Speed Sensor circuit poor electrical connection
How do I fix code P1891 HONDA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1891 HONDA code
The cost of diagnosing the P1891 HONDA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1891 HONDA Description
The start clutch control system controls the clutch piston hydraulic pressure which affects the amount of power transmission by the multiplate wet start clutch on the driven pulley shaft. The Transmission Control Module (TCM) activates the CVT start clutch pressure control solenoid to control the hydraulic pressure that is applied to the start clutch piston in accordance with vehicle conditions. The start clutch control system detects the overslip of the clutch. If the difference between the vehicle speed measured by the driven pulley speed sensor and one measured by the CVT speed sensor is excessive when driving the vehicle under Enable Conditions, a malfunction, excessive clutch slippage is detected and a DTC is stored.