Lexus Acura Error Code P1700: How to Fix It

Q: Can I drive with P1700 code?

You should avoid driving with P1700 code as it indicates a serious communication problem that can lead to unpredictable transmission behavior. If you must drive, do so cautiously at low speeds and seek immediate professional repair.

Q: What causes P1700 code in Lexus and Acura vehicles?

P1700 is typically caused by damaged wiring between the ECM and TCM, corroded connectors, faulty ground connections, or internal failure of either control module. Water damage and electrical shorts are also common causes.

Q: How much does it cost to fix P1700 error?

Repair costs vary widely depending on the root cause. Simple wiring repairs may cost $200-500, while ECM or TCM replacement can range from $1,500-3,000 including programming and labor.

Q: Will P1700 code clear itself?

P1700 is typically a hard code that will not clear itself until the underlying communication problem is resolved. The code may intermittently disappear but will usually return if the root cause isn't fixed.

Q: Is P1700 the same on all Lexus and Acura models?

While P1700 generally indicates transmission communication issues across Lexus and Acura vehicles, the specific diagnostic procedures and repair methods may vary by model year and transmission type. Always consult your vehicle's service manual for model-specific information.

Abstract

The P1700 error code indicates a communication problem between your vehicle's engine control module (ECM) and the automatic transmission control module (TCM). This serious issue can cause transmission shifting problems, reduced performance, and potential damage if not addressed promptly.