P1660 Ford Code - Output Circuit Check Signal High
Quick Answer
The P1660 Ford diagnostic trouble code indicates an issue with the output circuit check signal being detected as high. Common causes include Faulty ECM or PCM: A malfunctioning engine control module or powertrain control module can cause the output circuit signal to read high, Damaged Wiring: Corrosion, breaks, or shorts in the wiring harness connected to the affected circuit can lead to a high signal, Sensor Malfunction: A faulty sensor, such as a throttle position sensor or oxygen sensor, can send incorrect data to the ECM or PCM. 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
- P1660 Ford indicates Output Circuit Check Signal High.
- Common causes
- Common causes include Faulty ECM or PCM: A malfunctioning engine control module or powertrain control module can cause the output circuit signal to read high, Damaged Wiring: Corrosion, breaks, or shorts in the wiring harness connected to the affected circuit can lead to a high signal, Sensor Malfunction: A faulty sensor, such as a throttle position sensor or oxygen sensor, can send incorrect data to the ECM or PCM.
- 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 P1660 Ford Description
The P1660 Ford diagnostic trouble code indicates an issue with the output circuit check signal being detected as high. This means that the signal being sent from a specific component or system in the vehicle is registering as higher than the expected voltage level. In most cases, this code is related to the engine control module (ECM) or the powertrain control module (PCM) receiving a signal that is out of range or not within specifications.
Common Causes of P1660 Ford
- Faulty ECM or PCM: A malfunctioning engine control module or powertrain control module can cause the output circuit signal to read high.
- Damaged Wiring: Corrosion, breaks, or shorts in the wiring harness connected to the affected circuit can lead to a high signal.
- Sensor Malfunction: A faulty sensor, such as a throttle position sensor or oxygen sensor, can send incorrect data to the ECM or PCM.
- Poor Ground Connection: A weak or inadequate ground connection can result in an erratic signal being sent to the control module.
- Software Issues: An issue with the vehicle's software or programming can cause the output circuit signal to be detected as high.
Symptoms of P1660 Ford
- Check Engine Light: The most common symptom associated with the P1660 code is the illumination of the check engine light on the vehicle's dashboard.
- Engine Misfires: High signal levels can cause the engine to misfire, resulting in rough idling or hesitation during acceleration.
- Reduced Power Output: The vehicle may experience a decrease in power output or overall performance.
- Poor Fuel Efficiency: The high signal can lead to improper fuel mixture, resulting in decreased fuel efficiency.
- Engine Stalling: In severe cases, the engine may stall unexpectedly while driving or idling.
How to Fix P1660 Ford
- Diagnose the Issue: Use a diagnostic scanner to retrieve the specific fault codes and pinpoint the source of the high signal.
- Inspect Wiring and Connections: Check the wiring harness and connectors for any signs of damage, corrosion, or loose connections.
- Test Sensors: Test the sensors connected to the affected circuit to determine if any are faulty or sending incorrect data.
- Repair or Replace Components: Depending on the findings, repair or replace any damaged wiring, faulty sensors, or malfunctioning control modules.
- Clear Codes and Test Drive: Once the repairs have been completed, clear the fault codes from the system and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P1660 Ford
The cost of repairing a P1660 Ford code can vary depending on the root cause of the issue and the extent of the repairs needed. On average, you can expect to pay anywhere from $100 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's best to check with your local shop for a more accurate estimate. Additionally, factors such as your vehicle's make and model, as well as the location of the repair shop, can also affect the overall cost.
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