← View Generic P0901 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

P0901: P0901: Transmission Advanced System - Pressure Control Solenoid 'A' Circuit Low

on 2021 Honda PASSPORT

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
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 P0901 Mean on 2021 Honda PASSPORT?

The Powertrain Control Module (PCM) has detected a low voltage signal from the Pressure Control Solenoid 'A' circuit, which is responsible for controlling the transmission's hydraulic pressure.
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Symptoms

  • • Transmission slipping
  • • hesitation
  • • or hesitation during acceleration
  • • delayed engagement of gears
  • • or a 'check engine' light on the dashboard.
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Common Causes

  • • Faulty Pressure Control Solenoid 'A'
  • • low transmission fluid level
  • • clogged transmission filter
  • • or a faulty transmission pressure sensor.
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How to Fix P0901 on 2021 Honda PASSPORT

1. Check transmission fluid level and top off as necessary. 2. Inspect and clean the transmission filter. 3. Replace the Pressure Control Solenoid 'A' if faulty. 4. Check and replace the transmission pressure sensor if faulty.

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Need Maintenance Info for Your PASSPORT?

Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.

View 2021 Honda PASSPORT Specs

Parts for 2021 Honda PASSPORT

Pressure Control Solenoid 'A' Shop ↗ Transmission filter Shop ↗ Transmission pressure sensor Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0901

P0899 Sequential Code

P0899: Transmission Control System Malfunction

Medium
P0900 Sequential Code

P0900: Transmission Advanced System Malfunction

Medium
P0902 Sequential Code

P0902: Transmission Advanced System - Pressure Control Solenoid 'A' Circuit Low

Medium
P0903 Sequential Code

P0903: Transmission Range Sensor Circuit Malfunction

Medium

💡 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