OBD-II Generic Error Code P0375: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
Error Code
P0375
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code P0375 indicates a problem with the timing reference high resolution signal B in your vehicle's engine management system. This signal is critical for precise ignition timing and fuel injection. When this code appears, the engine may run rough, lose power, or stall. Most often, this is caused by a faulty crankshaft or camshaft position sensor, wiring issues, or a damaged reluctor ring.
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Tools You'll Need

How to Fix Error Code P0375

  1. Check Engine Light and Scan Tool

  2. Inspect Wiring and Connectors

    Disconnect the battery negative terminal before working on electrical components to avoid shorts.
  3. Test the Crankshaft Position Sensor

  4. Test the Camshaft Position Sensor

    Keep hands and tools away from moving engine parts while cranking.
  5. Inspect the Reluctor Ring

    This may require removing the harmonic balancer or timing cover – consult a service manual.
  6. Check ECU and Timing Belt/Chain

Parts You May Need

Crankshaft Position Sensor
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Camshaft Position Sensor
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Wiring Harness Connector
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Crankshaft Position Sensor
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Camshaft Position Sensor
Check Price on Amazon
Wiring Harness Connector
Check Price on Amazon
Crankshaft Position Sensor
Check Price on Amazon
Camshaft Position Sensor
Check Price on Amazon
Wiring Harness Connector
Check Price on Amazon
Crankshaft Position Sensor
Check Price on Amazon
Camshaft Position Sensor
Check Price on Amazon
Wiring Harness Connector
Check Price on Amazon
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When to Call a Professional

If you have inspected all sensors and wiring but the code persists, or if you suspect a damaged reluctor ring or timing issue, take the vehicle to a qualified mechanic. They have specialized tools and diagnostic equipment to address complex engine timing problems.

Frequently Asked Questions

Can I drive with error code P0375?
It is not recommended to drive long distances with P0375. The engine may run poorly, stall, or fail to start, leading to unsafe driving conditions. Get the issue diagnosed and fixed promptly.
Will replacing the crankshaft position sensor fix P0375?
Often, yes. A faulty CKP sensor is a common cause. However, the camshaft sensor, wiring, or reluctor ring could also be the culprit. Always test before replacing parts.
What does 'high resolution signal B' mean?
High resolution signals come from the crankshaft or camshaft position sensors to provide precise timing data to the ECU. 'Signal B' typically refers to the camshaft position sensor. A problem with this signal can disrupt fuel injection and ignition timing.
How much does it cost to fix P0375?
If it's a sensor replacement, parts cost $20-$100 and labor $50-$150 if done by a shop. DIY is cheaper. If the reluctor ring or timing components need repair, costs can exceed $500.
Can a bad battery cause P0375?
While unlikely, a weak battery or poor ground can cause erratic sensor readings. Check battery voltage and grounds as part of your diagnosis.