P0651 2016 Honda CR-V Code - Sensor Reference Voltage 'B' Circuit Malfunction
Quick Answer
The Powertrain Control Module (PCM) is equipped with a voltage monitor (5 V power source) to supply a stable 5 V to each sensor as a reference voltage. Common causes include A/C pressure sensor VCC line short to power, Accelerator Pedal Position (APP) sensor VCC line short to power, Turbocharger VCC line short to power. 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
- P0651 2016 Honda CR-V indicates Sensor Reference Voltage 'B' Circuit Malfunction.
- Common causes
- Common causes include A/C pressure sensor VCC line short to power, Accelerator Pedal Position (APP) sensor VCC line short to power, Turbocharger VCC line short to power.
- 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.
Code P0651 2016 Honda CR-V Description
What are the Possible Causes of the DTC P0651 2016 Honda CR-V?
- A/C pressure sensor VCC line short to power
- Accelerator Pedal Position (APP) sensor VCC line short to power
- Turbocharger VCC line short to power
- Turbocharger boost sensor VCC line short to power
- Camshaft Position (CMP) sensor A VCC line short to power
- CMP sensor B VCC line short to power
- A/C pressure sensor VCC line short to ground
- APP sensor A/B VCC line short to ground
- Turbocharger VCC line short to ground
- Turbocharger boost sensor VCC line short to ground
- CMP sensor A VCC line short to ground
- CMP sensor B VCC line short to ground
- EVAP leak check module internal circuit failure
- Powertrain Control Module (PCM) internal circuit failure
How to Fix the DTC P0651 2016 Honda CR-V?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0651 2016 Honda CR-V code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0651 2016 Honda CR-V code?
Need more information on how to fix the P0651 2016 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0651 2016 Honda CR-V Code
1. What does the OBDII code P0651 mean on a 2016 Honda CR-V?
P0651 indicates a malfunction in the Sensor Reference Voltage 'B' circuit, which supplies a consistent voltage to various sensors in the vehicle.
2. What are the common symptoms of code P0651 in a 2016 Honda CR-V?
Symptoms may include the check engine light turning on, poor engine performance, erratic sensor readings, or the vehicle entering limp mode.
3. What causes the P0651 code in a 2016 Honda CR-V?
Common causes include damaged wiring, a faulty sensor, a defective Engine Control Module (ECM), or a short or open circuit in the Sensor Reference Voltage 'B' circuit.
4. How do I diagnose the P0651 code in my 2016 Honda CR-V?
Start by inspecting the wiring and connectors for damage or corrosion, then use a multimeter to test the reference voltage at the affected sensors and trace the issue back to the ECM or wiring.
5. Can I drive my 2016 Honda CR-V with the P0651 code?
Driving with this code is not recommended, as it can cause performance issues and potentially damage other components if not addressed promptly.
6. How is the P0651 code fixed on a 2016 Honda CR-V?
Repairs may include repairing or replacing damaged wiring, replacing a faulty sensor, or, in rare cases, replacing the ECM if it’s determined to be defective.
7. What sensors rely on the Sensor Reference Voltage 'B' circuit in a 2016 Honda CR-V?
Sensors such as the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and others may use the Sensor Reference Voltage 'B' circuit.
8. How much does it cost to fix the P0651 code on a 2016 Honda CR-V?
Repair costs vary depending on the issue but typically range from $100 to $500 for wiring repairs or sensor replacements. ECM replacement can cost significantly more.
9. Can a low battery cause the P0651 code in a 2016 Honda CR-V?
While not common, a weak or failing battery could potentially cause voltage irregularities that might trigger this code.
10. Do I need special tools to fix the P0651 code on a 2016 Honda CR-V?
Basic tools like a multimeter, OBDII scanner, and wiring diagrams are typically required for diagnosing and repairing this issue.
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