P1628 RAM Code - Sensor Reference Voltage 2 Circuit Erratic
Quick Answer
The P1628 code relates to an issue with the Sensor Reference Voltage 2 Circuit in the vehicle. Common causes include Faulty Sensor: A malfunctioning sensor connected to the Sensor Reference Voltage 2 Circuit can trigger this code, Wiring Issues: Corroded, damaged, or loose wiring connections can disrupt the voltage signal, leading to erratic readings, ECM Malfunction: A problem with the Engine Control Module (ECM) can also cause issues with the sensor reference voltage circuit. 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
- P1628 RAM indicates Sensor Reference Voltage 2 Circuit Erratic.
- Common causes
- Common causes include Faulty Sensor: A malfunctioning sensor connected to the Sensor Reference Voltage 2 Circuit can trigger this code, Wiring Issues: Corroded, damaged, or loose wiring connections can disrupt the voltage signal, leading to erratic readings, ECM Malfunction: A problem with the Engine Control Module (ECM) can also cause issues with the sensor reference voltage circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1628 RAM Description
The P1628 code relates to an issue with the Sensor Reference Voltage 2 Circuit in the vehicle. The sensor reference voltage is a crucial component in the vehicle's electronic system, as it provides a stable voltage signal to various sensors. An erratic sensor reference voltage can lead to inaccurate sensor readings and disrupt the overall performance of the vehicle. This code typically indicates that there is a problem with the circuit that supplies voltage to one of the sensors, causing fluctuations or inconsistencies in the voltage signal.
Common Causes of P1628 RAM
- Faulty Sensor: A malfunctioning sensor connected to the Sensor Reference Voltage 2 Circuit can trigger this code.
- Wiring Issues: Corroded, damaged, or loose wiring connections can disrupt the voltage signal, leading to erratic readings.
- ECM Malfunction: A problem with the Engine Control Module (ECM) can also cause issues with the sensor reference voltage circuit.
- Power Supply Problems: Issues with the vehicle's power supply or battery can affect the stability of the sensor reference voltage.
Symptoms of P1628 RAM
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Inconsistent Sensor Readings: The vehicle may experience erratic sensor readings, leading to issues with fuel mixture, timing, or other engine parameters.
- Poor Fuel Efficiency: An erratic sensor reference voltage can lead to inefficient fuel delivery, resulting in decreased fuel efficiency.
- Engine Hesitation: The vehicle may experience hesitation or stalling while accelerating, as the ECM tries to compensate for the erratic sensor readings.
How to Fix P1628 RAM
- Diagnose the Issue: Use a diagnostic scanner to retrieve the error code and identify the specific sensor or circuit causing the problem.
- Inspect Wiring Connections: Check the wiring harness connected to the Sensor Reference Voltage 2 Circuit for any visible damage, corrosion, or loose connections.
- Test Sensors: Test the sensors connected to the circuit to determine if any of them are faulty and need to be replaced.
- Replace Faulty Components: Replace any faulty sensors, wiring harnesses, or the ECM if necessary to resolve the erratic sensor voltage issue.
- Clear Codes: Clear the error codes using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1628 RAM
The cost of repairing a P1628 code related to the Sensor Reference Voltage 2 Circuit Erratic can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $100 to $500, while labor costs can range from $80 to $150 per hour. The total cost of the repair may therefore range from $200 to $1000, including parts and labor. It's important to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle.
Need more information about the P1628 RAM code?
Need more information on how to fix the P1628 RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1628 RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1628 RAM Code
1. What does the OBDII code P1628 mean in a RAM vehicle?
P1628 indicates an issue with the Sensor Reference Voltage 2 Circuit, where the voltage is behaving erratically or is outside the expected range.
2. What are the common symptoms of the P1628 code in a RAM?
Symptoms may include an illuminated check engine light, engine performance issues, erratic sensor readings, or the vehicle entering limp mode.
3. What causes the P1628 code to trigger in a RAM?
Common causes include a faulty sensor, damaged wiring, poor electrical connections, or a malfunctioning powertrain control module (PCM).
4. Can a bad PCM cause the P1628 code in a RAM?
Yes, a malfunctioning PCM or its internal circuitry can cause erratic behavior in the Sensor Reference Voltage 2 Circuit, leading to the P1628 code.
5. How can I diagnose the P1628 code on my RAM?
Start by checking the wiring and connectors for damage or corrosion, test the affected sensors, and use a multimeter to verify the reference voltage in the circuit.
6. Is it safe to drive with the P1628 code active in my RAM?
Driving with this code may lead to poor engine performance or limp mode. It's best to address the issue promptly to avoid further damage.
7. What sensors are typically associated with the P1628 code on a RAM?
The code may affect sensors that rely on the Sensor Reference Voltage 2 Circuit, such as MAP sensors, throttle position sensors, or other engine-related sensors.
8. How can I fix the P1628 code on my RAM?
Repairs may include fixing damaged wiring, cleaning or replacing corroded connectors, replacing faulty sensors, or reprogramming or replacing the PCM if necessary.
9. Can a low battery cause the P1628 code on a RAM?
A low battery is unlikely to directly cause this code, but poor voltage regulation or electrical issues in the circuit can contribute to it.
10. How much does it cost to repair the P1628 code on a RAM?
Repair costs vary depending on the root cause, ranging from $50 for a wiring fix to $1,000 or more for PCM replacement and reprogramming.
Discuss the causes and fixes for P1628 RAM OBDII Code
Code P1628 RAM comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.