P1690 Jeep Code - Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor
Quick Answer
The P1690 diagnostic trouble code for Jeep vehicles indicates that there is a discrepancy between the fuel injection pump crankshaft position (CKP) sensor and the engine control module (ECM) CKP sensor. Common causes include Faulty fuel injection pump CKP sensor, Faulty ECM CKP sensor, Wiring or connector issues between the sensors and ECM. 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
- P1690 Jeep indicates Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor.
- Common causes
- Common causes include Faulty fuel injection pump CKP sensor, Faulty ECM CKP sensor, Wiring or connector issues between the sensors and ECM.
- 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 P1690 Jeep Description
The P1690 diagnostic trouble code for Jeep vehicles indicates that there is a discrepancy between the fuel injection pump crankshaft position (CKP) sensor and the engine control module (ECM) CKP sensor. This means that the signals from these two sensors are not matching up, which can lead to a variety of issues with the vehicle's performance.
Common Causes of P1690 Jeep
- Faulty fuel injection pump CKP sensor
- Faulty ECM CKP sensor
- Wiring or connector issues between the sensors and ECM
- Incorrect sensor installation
- ECM software issues
Symptoms of P1690 Jeep
- Engine misfires
- Rough idling
- Stalling
- Poor fuel efficiency
- Check engine light illuminated
How to Fix P1690 Jeep
- Begin by performing a thorough visual inspection of the CKP sensors, wiring, and connectors to check for any signs of damage or corrosion.
- Use a diagnostic scanner to retrieve the specific fault codes and further pinpoint the issue.
- Test the resistance and voltage of the CKP sensors to determine if they are functioning within the manufacturer's specifications.
- Replace any faulty CKP sensors, wiring, or connectors as needed.
- Clear the fault codes and perform a test drive to ensure that the issue has been resolved.
Cost to Fix P1690 Jeep
The typical repair costs for addressing a P1690 code on a Jeep vehicle can vary depending on the extent of the issue and the specific parts that need to be replaced. Generally, the cost of replacing a CKP sensor can range from $100 to $300, including parts and labor. However, additional costs may apply if there are wiring or connector issues that need to be addressed. It is recommended to consult with a professional mechanic or auto repair shop for a more accurate cost estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary, so it's essential to consider these factors when budgeting for the repair.
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