P0652 OBD-II: Sensor Reference Voltage "B" Circuit Low

P0652 Severity

Moderate

Will P0652 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What causes OBD-II fault code P0652?

The engine control module (PCM) sends out a 5 volt reference signal to all applicable engine sensors. If the PCM detects an issue with this signal, it will set code P0652.

What Does P0652 Code Mean?

OBD-II Code P0652 is defined as a Sensor Reference Voltage "B" Circuit Low

The engine control module (PCM) sends out a 5 volt reference signal to all applicable engine sensors. If the PCM detects an issue with this signal, it will set code P0652.

P0652 Symptoms

Engine may not start

Common Problems That Trigger the P0652 Code

Engine sensor failure
Powertrain Control Module (PCM) failure
Wiring issue

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Other OBD-II Codes

P0651: Sensor Reference Voltage "B" Circuit/Open P0650: Malfunction Indicator Lamp (MIL) Control Circuit P064F: Unauthorized Software/Calibration Detected P064E: Internal Control Module O2 Sensor Processor Performance P064D: Internal Control Module O2 Sensor Processor Performance P064C: Glow Plug Control Module P064B: PTO Control Module P064A: Fuel Pump Control Module P0649: Speed Control Lamp Control Circuit P0648: Immobilizer Lamp Control Circuit P0647: A/C Clutch Relay Control Circuit High P0646: A/C Clutch Relay Control Circuit Low P0653: Sensor Reference Voltage "B" Circuit High P0654: Engine RPM Output Circuit P0655: Engine Hot Lamp Output Control Circuit P0656: Fuel Level Output Circuit P0657: Actuator Supply Voltage "A" Circuit/Open P0658: Actuator Supply Voltage "A" Circuit Low P0659: Actuator Supply Voltage "A" Circuit High P065A: Generator System Performance P065B: Generator Control Circuit Range/Performance P065C: Generator Mechanical Performance P065D: Reductant System Malfunction Lamp Control Circuit P065E: Intake Manifold Tuning Valve Performance

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