STOP AND START SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Tech Tips

If trouble codes are displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the page for the respective "DTC Code" in the DTC chart.

Inspect the "Fuse" and "Relay" before inspecting the suspected areas as shown in the chart below.

Stop and Start System
DTC Code Detection Item Trouble Area ECO Indicator Light Memory See page
P0335 Crankshaft Position Sensor "A" Circuit

- Harness or connector

- Crankshaft position sensor

- ECM

- Engine stop and start ECU

Blinking DTC stored

Click here

P0500 Vehicle Speed Sensor "A"

- Harness or connector

- Combination meter

- Speed sensor

- Skid control ECU (Brake actuator assembly)

- Engine stop and start ECU

Blinking DTC stored

Click here

P0562 System Voltage Low

- Battery

- Harness or connector

- Engine stop and start ECU

Blinking DTC stored

Click here

P062F Internal Control Module EEPROM Error Engine stop and start ECU Blinking DTC stored

Click here

P1540 Brake Booster Sensor Circuit (Open or Short)

- Harness or connector

- Vacuum sensor assembly

- Engine stop and start ECU

Blinking DTC stored

Click here

P1541 Brake Booster Sensor Circuit

- Vacuum sensor assembly

- Brake booster

- Brake booster hose (vacuum hose)

- Engine stop and start ECU

Blinking DTC stored

Click here

P1545 Starter Maintenance

- Starter assembly

- Harness or connector

- Engine stop and start ECU

- ST relay

- ECM

Blinking DTC stored

Click here

P1644 ECU Internal Error

- Harness or connector

- ST relay

- Engine stop and start ECU

Blinking DTC stored

Click here

P1862 Clutch Control System 2

- Clutch start switch (lower)

- Clutch switch (upper)

- Harness or connector

- Engine stop and start ECU

Blinking DTC stored

Click here

P2531 Ignition Switch Run Position Circuit Low

- Harness or connector

- Engine stop and start ECU

Blinking DTC stored

Click here

P323B Backup Boost Converter

- Backup boost converter

- Harness or connector

- Engine stop and start ECU

- Battery

Blinking DTC stored

Click here

U0100 Lost Communication with ECM / PCM "A"

- Harness or connector

- Engine stop and start ECU

- ECM

Blinking DTC stored

Click here

U0121 Lost Communication with Anti-lock Brake System (ABS) Control Module

- Harness or connector

- Engine stop and start ECU

- Skid control ECU (Brake actuator assembly)

Blinking DTC stored

Click here

U0131 Lost Communication with Electric Power Steering ECU

- Harness or connector

- Engine stop and start ECU

- Power steering ECU

Blinking DTC stored

Click here

U0140 Lost Communication with Main Body ECU

- Harness or connector

- Engine stop and start ECU

- Main body ECU

Blinking DTC stored

Click here

U0151 Lost Communication with Airbag ECU

- Harness or connector

- Engine stop and start ECU

- Center airbag sensor

Blinking DTC stored

Click here

U0155 Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)

- Harness or connector

- Engine stop and start ECU

- Combination meter

Blinking DTC stored

Click here

U0164 Lost Communication with HVAC Control Module

- Harness or connector

- Engine stop and start ECU

- A/C amplifier

Blinking DTC stored

Click here