P1901 – Mazda DTC

Mazda DTC P1901 – Torque Converter Clutch Circuit Intermittent

DTC P1901 meaning on Mazda

DTC P1901 on a Mazda indicates an intermittent issue with the Torque Converter Clutch Circuit. This code is stored when the Powertrain Control Module (PCM) detects a problem with the electrical circuit that controls the torque converter clutch engagement.

Mazda DTC P1901 symptoms

Symptoms of DTC P1901 on a Mazda may include:

• Check Engine Light illuminated
• Transmission slipping or shuddering
• Poor fuel economy
• Harsh shifting

Mazda DTC P1901 causes

Common causes of DTC P1901 on a Mazda include:

• Faulty torque converter clutch solenoid
• Wiring issues in the torque converter clutch circuit
• PCM software issues

Mazda DTC P1901 seriousness

DTC P1901 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved.

How to diagnose DTC P1901 on Mazda

To diagnose DTC P1901 on a Mazda, a mechanic may perform the following steps:

1. Use a scan tool to retrieve the DTC and freeze frame data
2. Inspect the torque converter clutch solenoid and wiring for damage
3. Check for any loose connections or corrosion in the circuit
4. Perform a test drive to monitor the transmission’s behavior

How to fix DTC P1901 on Mazda

To fix DTC P1901 on a Mazda, the following steps may be taken:

1. Repair or replace any damaged wiring or connectors in the torque converter clutch circuit
2. Replace the torque converter clutch solenoid if faulty
3. Update the PCM software if necessary

How to erase DTC P1901 on Mazda

DTC P1901 can be cleared from the PCM using a scan tool that has the capability to clear diagnostic trouble codes. Once the issue has been resolved and the repair completed, the code can be erased to turn off the Check Engine Light.