P1687 Acura Code - Automatic Transmission To Engine Control Module Signal 'B' Input High
Quick Answer
The P1687 code for Acura vehicles indicates that there is a high input signal from the automatic transmission to the Engine Control Module (ECM) for signal 'B'. Common causes include Faulty transmission sensor, Wiring or connector issues between transmission and ECM, ECM malfunction. 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
- P1687 Acura indicates Automatic Transmission To Engine Control Module Signal 'B' Input High.
- Common causes
- Common causes include Faulty transmission sensor, Wiring or connector issues between transmission and ECM, ECM malfunction.
- 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 P1687 Acura Description
The P1687 code for Acura vehicles indicates that there is a high input signal from the automatic transmission to the Engine Control Module (ECM) for signal 'B'. This means that there is a communication issue between the transmission and the ECM, which can lead to various performance issues in the vehicle. The ECM controls the transmission's shifting patterns and overall operation, so a malfunction in this communication can impact the vehicle's drivability.
Common Causes of P1687 Acura
- Faulty transmission sensor
- Wiring or connector issues between transmission and ECM
- ECM malfunction
- Low transmission fluid level
- Transmission control module (TCM) failure
Symptoms of P1687 Acura
- Harsh or delayed gear shifts
- Limp mode activation
- Reduced acceleration
- Poor fuel efficiency
- Check Engine Light illuminated
How to Fix P1687 Acura
- Diagnose the code using a diagnostic scanner to pinpoint the exact cause of the high input signal.
- Inspect the transmission sensor and wiring for any damage or corrosion. Replace if necessary.
- Check transmission fluid level and quality. Top up or flush if needed.
- Test the ECM and TCM for proper functioning. Replace if found to be faulty.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1687 Acura
The cost of repairing the P1687 code on an Acura vehicle can vary depending on the specific cause of the issue. In general, the parts required for this repair, such as a new transmission sensor or ECM, can range from $200 to $800. Labor costs may add an additional $100 to $300, bringing the total repair cost to approximately $300 to $1100. However, it is important to note that these are rough estimates and actual costs may vary based on the location, make and model of the vehicle, and the rates charged by the auto repair shop. It is recommended to obtain quotes from multiple sources to get a more accurate cost estimate.
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