P1703 Nissan Code - Transmission Control Module ROM
Quick Answer
The P1703 Nissan code indicates a problem with the Transmission Control Module (TCM) ROM, which is responsible for storing important data and instructions for the transmission system to operate correctly. Common causes include Electrical issues such as a faulty TCM power supply or wiring, Corrosion or poor connections in the TCM circuit, Software glitches or programming errors in the TCM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1703 Nissan indicates Transmission Control Module ROM.
- Common causes
- Common causes include Electrical issues such as a faulty TCM power supply or wiring, Corrosion or poor connections in the TCM circuit, Software glitches or programming errors in the TCM.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1703 Nissan Description
The P1703 Nissan code indicates a problem with the Transmission Control Module (TCM) ROM, which is responsible for storing important data and instructions for the transmission system to operate correctly. The ROM (Read-Only Memory) in the TCM can become corrupted or damaged, leading to communication errors and malfunctions in the transmission. This issue can result in various transmission-related problems and affect the vehicle's overall performance and drivability.
Common Causes of P1703 Nissan
- Electrical issues such as a faulty TCM power supply or wiring
- Corrosion or poor connections in the TCM circuit
- Software glitches or programming errors in the TCM
- Internal TCM failure due to age or manufacturing defects
- Exposure to water or moisture causing damage to the TCM
Symptoms of P1703 Nissan
- Harsh shifting between gears
- Delayed shifting or difficulty in engaging gears
- Slipping gears or erratic transmission behavior
- Illumination of the Check Engine Light
- Reduced fuel efficiency or performance
How to Fix P1703 Nissan
- Begin by conducting a thorough diagnostic scan to retrieve the specific error codes and confirm the TCM ROM issue.
- Inspect the TCM connections for corrosion or damage, and clean or repair as necessary.
- Check the TCM power supply and wiring for any faults or loose connections, and repair or replace as needed.
- Update the TCM software or reprogram the module to resolve any programming errors.
- If the TCM ROM is irreparably damaged, consider replacing the TCM with a new or remanufactured unit to restore proper transmission function.
Cost to Fix P1703 Nissan
The typical repair costs for addressing a P1703 Nissan code related to the Transmission Control Module ROM issue can range from $200 to $800, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It is advisable to inquire about local rates to obtain a more accurate estimate for this repair. Keep in mind that rates may be higher in metropolitan areas or at dealerships, while independent shops may offer more affordable pricing.
Tech Notes for P1703 Nissan
2003–2010 Nissan RE5R05A Transmission Factory Service Bulletin OBDII Code P1703
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