P1345 on BMW
Crankshaft Position - Camshaft Position Correlation
P1345 on BMW vehicles indicates crankshaft position - camshaft position correlation. Au7o has documented this code across 1 BMW model — most commonly on 2 Series. A manufacturer-specific powertrain code; on General Motors vehicles (Chevrolet, GMC, Buick, Cadillac, Pontiac, Saturn, Isuzu) it is set when the signals from the crankshaft position sensor and camshaft position sensor fall out of their expected relationship - commonly cited as roughly 1.5 to 2 percent of crankshaft rotation out of sync. The PCM needs this correlation to time spark and fuel correctly. Symptoms include a check engine light, rough idle or misfire, hard starting, and stalling. On older GM V6/V8 engines this frequently points to a worn timing chain, a real mechanical repair that should not be ignored. Other makes (including Honda, Suzuki and some imports) assign P1345 a different meaning, so confirm the definition for your make before diagnosing. Typical repair costs on BMW range from $600 to $1,200, depending on the specific model and root cause.
Common Causes of P1345
- •Stretched or worn timing chain / failed chain tensioner or guides (very common on higher-mileage GM engines)
- •Faulty camshaft position sensor
- •Faulty crankshaft position sensor or damaged reluctor wheel
- •Loose or improperly seated sensor at its mounting, or wrong sensor installed
- •Damaged wiring, connector corrosion, or shielding fault on either sensor circuit
- •Incorrect ignition/cam timing after recent timing component service
- •Crankshaft position variation relearn not performed after PCM or sensor replacement
P1345 on BMW by Model
BMW 2 Series(1 issue)
- Direct-Injection Intake Valve Carbon Buildup - Misfires and Tip-In Hesitation2014-2025
Every US 2 Series engine (N20, N26, N55, B46, B48, B58) is direct injected, so no fuel washes over the back of the intake valves. Oil vapor from the crankcase ventilation system and EGR-side carbon bake onto the valve stems and ports, progressively choking airflow and disturbing the intake charge. Owners report the classic pattern: rough cold idle, hesitation on tip-in and between roughly 1,500-2,500 rpm, hard hot restarts, and eventually cylinder-specific misfire codes that do not resolve with coils and plugs. Deposits are usually meaningful by 60,000-80,000 miles and severe by 100,000, and are worse on short-trip and city-driven cars. It is frequently misdiagnosed and treated with repeated coil/injector replacement before anyone pulls the intake manifold and looks.
Looking for P1345 on a different make?
View P1345 across all makes →Frequently Asked Questions
What does P1345 mean on BMW?▼
P1345 stands for "Crankshaft Position - Camshaft Position Correlation." A manufacturer-specific powertrain code; on General Motors vehicles (Chevrolet, GMC, Buick, Cadillac, Pontiac, Saturn, Isuzu) it is set when the signals from the crankshaft position sensor and camshaft position sensor fall out of their expected relationship - commonly cited as roughly 1.5 to 2 percent of crankshaft rotation out of sync. The PCM needs this correlation to time spark and fuel correctly. Symptoms include a check engine light, rough idle or misfire, hard starting, and stalling. On older GM V6/V8 engines this frequently points to a worn timing chain, a real mechanical repair that should not be ignored. Other makes (including Honda, Suzuki and some imports) assign P1345 a different meaning, so confirm the definition for your make before diagnosing. On BMW specifically, this code is documented across 1 model.
What causes P1345 on BMW vehicles?▼
Common causes on BMW: Stretched or worn timing chain / failed chain tensioner or guides (very common on higher-mileage GM engines), Faulty camshaft position sensor, Faulty crankshaft position sensor or damaged reluctor wheel, Loose or improperly seated sensor at its mounting, or wrong sensor installed, Damaged wiring, connector corrosion, or shielding fault on either sensor circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1345 on a BMW?▼
Repair costs on BMW range from $600 to $1,200, depending on the specific model and root cause.
Which BMW models have P1345 documented?▼
Au7o has documented P1345 on 1 BMW model: 2 Series.