P0697

Symptoms

• The Check Engine light comes on
• Multiple sensor error codes simultaneously
• Unstable engine operation
• Incorrect position sensor readings
• Switching to emergency engine operation mode

Causes

• Short circuit to ground in the circuit of one of the sensors of group C
• Open 5V reference wire on circuit C
• Sensor fault with internal short circuit
• Damage to the wiring between the ECU and sensors
• Internal ECU fault

How to Fix

1. Read all OBD-II error codes and write down each one
2. Determine which sensors are connected to the reference voltage circuit C according to the diagram
3. Measure the reference voltage at each sensor in this circuit (standard: 5 V)
4. Disconnect sensors one at a time and check for voltage recovery
5. Find and eliminate short circuit to ground (replace damaged sensor or wiring)
6. If the external circuits are in good condition - diagnostics and replacement of the ECU

Related codes

Error P0697 by Vehicle Brand