P1771 – Mazda DTC

Mazda DTC P1771 – Throttle Position Sensor Circuit Open to Transmission Control Module

DTC P1771 meaning on Mazda

DTC P1771 indicates a fault in the throttle position sensor circuit that communicates with the transmission control module in Mazda vehicles.

Mazda DTC P1771 symptoms

• Check Engine Light (CEL) illuminated on the dashboard
• Transmission shifting issues
• Reduced engine performance

Mazda DTC P1771 causes

• Open circuit in the throttle position sensor wiring
• Defective throttle position sensor
• Faulty transmission control module

Mazda DTC P1771 seriousness

The seriousness of DTC P1771 lies in its potential to cause transmission-related problems and affect the overall drivability of the vehicle. Ignoring this issue can lead to further damage.

How to diagnose DTC P1771 on Mazda

1. Use an OBD-II scanner to retrieve the trouble codes
2. Inspect the throttle position sensor wiring for any visible damage
3. Test the throttle position sensor using a multimeter
4. Check the connection between the throttle position sensor and the transmission control module

How to fix DTC P1771 on Mazda

1. Repair or replace any damaged wiring in the throttle position sensor circuit
2. Replace the throttle position sensor if found faulty
3. If the issue persists, consider replacing the transmission control module

How to erase DTC P1771 on Mazda

1. After fixing the underlying issue, use an OBD-II scanner to clear the trouble codes
2. Drive the vehicle to allow the system to relearn the throttle position sensor values