P1735 Gear Control Malfunction 2
The P1735 code indicates a gear control malfunction in the automatic transmission, specifically related to the gear selection control system. This code is manufacturer-specific for Nissan and Infiniti vehicles, often affecting CVT or conventional automatic transmissions. The Transmission Control Module (TCM) has detected that the actual gear ratio does not match the commanded ratio, or there is a fault in the gear control feedback circuit.
01. Most Common Causes
- Faulty transmission control solenoid
- Wiring or connector issues between TCM and transmission
- Internal TCM failure
- Worn or damaged internal transmission components
- Incorrect transmission fluid level or condition
- Faulty input or output speed sensors
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission slipping or stuck in gear
- Reduced fuel economy
- Vehicle may enter limp mode
03. Step-by-Step Diagnosis
Scan for codes and record freeze frame data
Check transmission fluid level and condition
Inspect wiring and connectors for damage or corrosion
Test transmission control solenoid resistance and operation
Verify input and output speed sensor signals
Perform TCM self-diagnosis and check for updates
1. Frequently Asked Questions
Is it safe to drive?▼
Driving with a P1735 code is not recommended as it can cause further transmission damage and unsafe driving conditions. Have the vehicle diagnosed and repaired promptly.
How much does it cost to fix?▼
Repair costs vary widely depending on the root cause, typically ranging from $200 for a sensor replacement to $3,000 or more for a transmission rebuild or replacement.