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P0345 on BMW: Symptoms, Causes & Fix

Camshaft Position Sensor A Circuit Malfunction (Bank 2)

Official technical diagnostic wire for fault code P0345 specifically affecting BMW vehicles (3 Series, 5 Series, 7 Series, X3, X5).

Sensor Voltage Ref
0.1V – 5.0V Ref
BMW Factory Standard
CAN Bus Speed
500 kbps CAN-FD
ISO 15765-4 Diagnostic Bus
Drivability Status
Drivable (Short Trip)
High urgency level
Est. Repair Cost
$120 - $350
Parts & Labor DIY
Model-Specific Diagnostic Wires

Select Your BMW Model for P0345:

9 Models Available
BMW 3 Series2020–2026
BMW 3 SeriesSedan • 2.0L TwinPower Turbo 4-Cyl (B48 255HP) / 3.0L Turbo I6 (B58 382HP)
P0345 Fix & DLC Location
BMW 5 Series2020–2026
BMW 5 SeriesSedan • 2.0L Turbo (B48) / 3.0L Turbo I6 (B58) / 4.4L Twin-Turbo V8 (N63) / i5 EV
P0345 Fix & DLC Location
BMW 7 Series2020–2026
BMW 7 SeriesSedan • 3.0L Turbo I6 (B58 375HP) / 4.4L Twin-Turbo V8 (S68 536HP) / i7 Dual Motor
P0345 Fix & DLC Location
BMW X32020–2026
BMW X3SUV • 2.0L Turbo (B48 248HP) / 3.0L M-Performance Inline-6 (B58 382HP)
P0345 Fix & DLC Location
BMW X52020–2026
BMW X5SUV • 3.0L Turbo I6 (375HP) / 4.4L V8 M60i / xDrive50e PHEV (483HP)
P0345 Fix & DLC Location
BMW X72020–2026
BMW X7SUV • 3.0L Turbo I6 (B58) / 4.4L Twin-Turbo V8 (S68 M60i 523HP)
P0345 Fix & DLC Location
BMW M32021–2026
BMW M3Coupe • 3.0L High-Revving Twin-Turbo Inline-6 (S58 473HP–523HP Competition)
P0345 Fix & DLC Location
BMW M52020–2026
BMW M5Sedan • 4.4L Twin-Turbo V8 M HYBRID (717HP / 738 lb-ft torque)
P0345 Fix & DLC Location
BMW i42022–2026
BMW i4EV • Single / Dual Motor EV (eDrive35, eDrive40, M50 536HP)
P0345 Fix & DLC Location

1. Common Symptoms on BMW Vehicles

When BMW Engine Control Modules (ECM) trigger fault code P0345, drivers typically report:

Check Engine Light on on BMW Powertrains
Hard starting on BMW Powertrains
VVT disabled on Bank 2 on BMW Powertrains

2. Root Causes on BMW Engines

Historical diagnostic claims across BMW engines point to the following failure distribution:

55%
Defective Bank 2 camshaft position sensor (BMW OEM Part)
25%
Broken wiring harness (BMW OEM Part)
12%
Low oil pressure to VVT phaser (BMW OEM Part)

3. Step-by-Step Fix Protocol for BMW

01
Scan and Record Freeze Frame Telemetry

Connect an OBD-II scan tool and record freeze frame sensor telemetry for code P0345 to note engine RPM, load, and voltage when the fault triggered. on BMW engines.

Required Tool: OBD-II Scanner
02
Inspect Related Wiring Harness & Connectors

Inspect the electrical connector and wiring harness related to P0345 for chafing, corrosion, moisture, or pin push-out. on BMW engines.

Required Tool: Flashlight, Multimeter
03
Test Component Resistance & Voltage Supply

Measure circuit voltage supply (12V B+ or 5V reference) and sensor/actuator resistance according to factory repair manual specifications. on BMW engines.

Required Tool: Digital Multimeter
04
Replace Defective Component

Install a new OEM-grade replacement part, torque fasteners to factory spec, and ensure electrical locking tabs click firmly. on BMW engines.

Required Tool: Hand Tool Socket Set, Torque Wrench
05
Clear Trouble Codes & Complete Drive Cycle

Clear all stored DTCs from vehicle memory and perform an OBD-II drive cycle to confirm the diagnostic monitor resets to 'Ready'. on BMW engines.

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing BMW (P0345)

Prime Fast Delivery & Verified Fitment
Direct-Fit Replacement Part

BMW OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for BMW.

$45 – $95 Prime
Check Fitment on Amazon
Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
View on Amazon
Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for BMWVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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4. BMW P0345 Frequently Asked Questions

What does code P0345 mean on a BMW?

On BMW vehicles, P0345 indicates that the Engine Control Module (ECM) detected camshaft position sensor a circuit malfunction (bank 2). This typically points to Defective Bank 2 camshaft position sensor or Broken wiring harness.

Can I continue driving my BMW with code P0345?

Caution. Bank 2 cam signal missing. Because this code carries a High severity rating on BMW powertrains, we recommend scanning live data values promptly to prevent secondary damage.

How much does it cost to fix code P0345 on a BMW?

Estimated DIY parts cost ranges from $120 - $350, while professional shop repairs at an authorized BMW dealership or independent specialist typically range from $180 to $380 including diagnostic labor.