P0697 Subaru Code - Sensor Reference Voltage 'C' Circuit Open
Quick Answer
The control module has internal 5-volt reference buses called "5-volt reference". Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM circuit poor electrical connection. 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
- P0697 Subaru indicates Sensor Reference Voltage 'C' Circuit Open.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), ECM harness is open or shorted, ECM circuit poor electrical connection.
- 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 P0697 Subaru Description
What are the Possible Causes of the DTC P0697 Subaru?
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection
- Shorted sensor on 5 volt circuit
How to Fix the DTC P0697 Subaru?
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 P0697 Subaru 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.
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Frequently Asked Questions about P0697 Subaru Code
1. What does the OBDII code P0697 mean for a Subaru?
P0697 indicates that there is an open circuit in the Sensor Reference Voltage 'C', which disrupts the proper operation of sensors relying on this voltage for accurate readings.
2. What are the common symptoms of code P0697 on a Subaru?
Symptoms may include poor engine performance, difficulty starting the vehicle, reduced fuel efficiency, or the illumination of the check engine light.
3. What causes the P0697 code on a Subaru?
Common causes include damaged wiring or connectors, a faulty ECM (Engine Control Module), or issues with sensors relying on the reference voltage.
4. Can I drive my Subaru with the P0697 code?
While you may still be able to drive, continuing to do so could lead to further damage or unsafe driving conditions due to inaccurate sensor readings affecting engine performance.
5. How is the P0697 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect wiring and connectors for damage, check sensor functionality, and test the ECM for proper operation.
6. What repairs are typically needed to fix the P0697 code?
Repairs may include replacing or repairing damaged wiring or connectors, replacing a faulty sensor, or addressing issues with the ECM.
7. How much does it cost to repair code P0697 on a Subaru?
Costs vary depending on the specific issue, but repairing wiring or connectors may cost $100-$300, while ECM replacement could exceed $1,000.
8. Can a bad sensor cause the P0697 code?
Yes, a malfunctioning sensor that relies on the 'C' reference voltage can trigger this code.
9. How can I prevent the P0697 code from occurring?
Regular maintenance, including inspecting wiring and connectors for wear or damage, can help prevent issues leading to this code.
10. Will clearing the P0697 code with an OBDII scanner fix the problem?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.
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