This guide is customized for your 2021 Honda PASSPORT
P0861: P0861: Transmission Control Module (TCM) - Pressure Control Solenoid 'A' Circuit Low
on 2021 Honda PASSPORT
Important for 2021 Honda PASSPORT Owners
Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does P0861 Mean on 2021 Honda PASSPORT?
Symptoms
- • Transmission slipping
- • hesitation
- • or refusal to engage gears
- • unusual noises
- • or a check engine light.
Common Causes
- • Faulty Pressure Control Solenoid 'A'
- • wiring issue
- • transmission control module failure
- • or a problem with the transmission's hydraulic system.
How to Fix P0861 on 2021 Honda PASSPORT
1. Check the wiring harness for damage or corrosion and repair/replace as needed. 2. Test the Pressure Control Solenoid 'A' circuit with a multimeter to ensure proper voltage. 3. Replace the Pressure Control Solenoid 'A' if faulty. 4. Update the transmission control module's software if necessary. 5. Perform a transmission fluid flush and check the fluid level.
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Related Diagnostic Codes
Other codes that may appear with P0861
P0859: Transmission Control Module (TCM) Range/Performance Issue
P0860: Transmission Control Module (TCM) Range/Performance Problem
P0862: Transmission Control Module (TCM) - Low Transmission Fluid Pressure
P0863: Transmission Control Module (TCM) - Low Transmission Fluid Pressure
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system