Faulty intake camshaft position sensor; Damaged or corroded wiring or connector at the CMP sensor; Worn or stretched timing chain or belt causing cam timing to deviate; Failed or contaminated engine oil control valve (OCV) affecting cam phaser operation; Metal debris or sludge on the CMP sensor tip interfering with the signal; PCM software issue or internal fault (less common)

DTC codes / Chrysler codes / P1346

P1346 · ChryslerIntake Camshaft Position (CMP) Sensor System Performance

Q: What does code P1346 mean?

Intake Camshaft Position (CMP) Sensor System Performance. P1346 on Chrysler vehicles means the powertrain control module (PCM) has detected a performance problem with the intake camshaft position (CMP) sensor circuit, where the signal does not correlate correctly with the crankshaft position (CKP) sensor during engine operation. The PCM compares the two signals to verify camshaft timing and sets this code when the intake cam signal is erratic, intermittent, or out of phase with the expected pattern.

P1346 on Chrysler vehicles means the powertrain control module (PCM) has detected a performance problem with the intake camshaft position (CMP) sensor circuit, where the signal does not correlate correctly with the crankshaft position (CKP) sensor during engine operation. The PCM compares the two signals to verify camshaft timing and sets this code when the intake cam signal is erratic, intermittent, or out of phase with the expected pattern.

SystemPowertrain

Code typeChrysler specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or intermittent misfire, especially when the engine is cold
Reduced engine performance or hesitation during acceleration
Hard starting or extended cranking before the engine fires
Poor fuel economy or increased emissions
In rare cases, the engine may stall or enter limp mode

Common causes, most likely first

Faulty intake camshaft position sensor
Damaged or corroded wiring or connector at the CMP sensor
Worn or stretched timing chain or belt causing cam timing to deviate
Failed or contaminated engine oil control valve (OCV) affecting cam phaser operation
Metal debris or sludge on the CMP sensor tip interfering with the signal
PCM software issue or internal fault (less common)

How to diagnose and fix it

Scan all modules for stored and pending codes, and record freeze-frame data to understand when the fault occurs
Visually inspect the CMP sensor, connector, and wiring for damage, corrosion, or loose pins
Check engine oil level and condition, as low or dirty oil can affect cam phaser operation and sensor signal
Perform a resistance and voltage test on the CMP sensor circuit according to Chrysler service information
Verify camshaft timing marks and inspect the timing chain or belt for stretch or wear
Test the oil control valve (OCV) for proper operation and clean or replace if necessary
Replace the CMP sensor only after confirming the circuit and timing are correct, then clear codes and verify repair

Don't overlook oil and timing chain wear

A stretched timing chain on high-mileage Chrysler engines often sets P1346 without any sensor fault, so always verify cam-to-crank correlation before replacing parts.
Sludge or metal particles on the CMP sensor tip can cause an intermittent signal that mimics a failed sensor, so clean the sensor and inspect the oil for debris first.
The OCV solenoid, which controls oil flow to the cam phaser, can fail and cause the intake cam to deviate from commanded timing, triggering P1346 even when the sensor itself is good.
On some Chrysler models, a weak battery or poor ground can cause voltage spikes that disrupt the CMP signal, so check charging system and grounds before condemning the sensor.
P1346 can be set by a PCM calibration issue, so check for technical service bulletins (TSBs) and ensure the PCM has the latest software before extensive diagnostics.

Can I keep driving with P1346?

You can usually drive the vehicle with P1346, but avoid aggressive acceleration or heavy loads until the fault is diagnosed, as timing errors can worsen and lead to misfires or stalling. If the engine runs rough, stalls, or the check engine light flashes, stop driving and seek professional service immediately.

Tools that help

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Guidance is general and written for Chrysler vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.