Mazda P0345 Error Code: How to Fix It
Medium 45-90 minutes Medium Severity
Verified June 2026
- Error Code
- P0345
- Brand
- Mazda
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 45-90 minutes
Ad
Tools You'll Need
- OBD2 scanner
- Socket wrench set
- Multimeter
- Electrical contact cleaner
- Basic hand tools
How to Fix Error Code P0345
-
Connect OBD2 Scanner and Verify Code
Never work on the engine while it's running or hot. Allow the engine to cool for at least 30 minutes before starting repairs. -
Locate the Camshaft Position Sensor
Disconnect the negative battery terminal before working on any electrical components to prevent short circuits. -
Inspect Wiring and Connections
-
Test Sensor Voltage
Be careful not to short circuit any wires while testing with the multimeter probes. -
Remove and Inspect the Sensor
Mark the sensor's orientation before removal to ensure proper reinstallation. -
Test or Replace the Sensor
Do not overtighten the sensor mounting bolt as this can crack the sensor housing or strip the threads. -
Clear Codes and Test Drive
Parts You May Need
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Camshaft position sensor
Check Price on Amazon
Sensor O-ring or gasket
Check Price on Amazon
Electrical connector pigtail
Check Price on Amazon
Ad
When to Call a Professional
Call a professional mechanic if you're uncomfortable working with electrical components, if the wiring harness needs extensive repair, if multiple camshaft position sensors are failing simultaneously, or if the problem persists after replacing the sensor as this may indicate PCM issues requiring specialized diagnostic equipment.Frequently Asked Questions
Can I drive my Mazda with P0345 code?
You can drive short distances to a repair facility, but avoid extended driving. The engine may run rough, have poor acceleration, or stall unexpectedly. Continued driving could cause additional engine damage or leave you stranded.
How much does it cost to fix P0345 on a Mazda?
DIY repair typically costs $30-80 for a new camshaft position sensor. Professional repair ranges from $150-350 including parts and labor, depending on your Mazda model and local labor rates.
What causes P0345 code in Mazda vehicles?
Common causes include a faulty camshaft position sensor, damaged wiring or connectors, timing chain problems, or rarely, a failed PCM. The sensor itself is the most frequent culprit, especially on higher mileage vehicles.
Will P0345 cause my Mazda to not start?
Yes, P0345 can prevent your Mazda from starting or cause it to start and immediately stall. The engine computer needs camshaft position data to properly time fuel injection and ignition, so a complete sensor failure can result in a no-start condition.