DTC Advanced Diagnostics: P0652, P0653 (3.0L Engine)

DTC P0652: Sensor Reference Voltage B Circuit Low Voltage DTC P0653: Sensor Reference Voltage B Circuit High Voltage

General Description

Courtesy of HONDA, U.S.A., INC.

The powertrain control module (PCM) is equipped with a 5 V power supply circuit to supply a stable 5 V to each sensor as reference voltage. The correct voltage for the sensors are loaded in the microcomputer (MCU) of the PCM (A/D input). If the sensor power voltage is a set value for a certain time, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type

Execution	Continuous
Sequence	None
Duration	0.5 second or more
DTC Type	One drive cycle, MIL on

Enable Conditions

Condition
Vehicle	ON mode

Malfunction Threshold

DTC: P0652

The sensor power voltage is less than 2.3145 V for at least 0.5 second.

DTC: P0653

The sensor power voltage is more than 2.686 V for at least 0.5 second.

Possible Cause

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

DTC: P0652

Accelerator pedal position (APP) sensor VCC line short to ground
Mass airflow (MAF) sensor/intake air temperature (IAT) sensor 1 VCC line short to ground
Turbocharger boost sensor VCC line short to ground
A/C pressure sensor VCC line short to ground
Evaporative emission (EVAP) leak check module VCC line short to ground* 1
Camshaft position (CMP) sensor A (bank 1) VCC line short to ground
CMP sensor B (bank 1) VCC line short to ground
CMP sensor A (bank 2) VCC line short to ground
CMP sensor B (bank 2) VCC line short to ground
Rocker arm oil pressure sensor VCC line short to ground

DTC: P0653

APP sensor VCC line short to power
MAF sensor/IAT sensor 1 VCC line short to power
Turbocharger boost sensor VCC line short to power
A/C pressure sensor VCC line short to power
EVAP leak check module VCC line short to power* 1
CMP sensor A (bank 1) VCC line short to power
CMP sensor B (bank 1) VCC line short to power
CMP sensor A (bank 2) VCC line short to power
CMP sensor B (bank 2) VCC line short to power
Rocker arm oil pressure sensor VCC line short to power

Common

PCM internal circuit failure

*1: USA and Canada models

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory.

Conditions for clearing the DTC

The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.