P0344 on Jeep: How to Diagnose & Fix
Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or Single Sensor)
1 Jeep model · 1 documented issue · 1 critical · $350-$2,500 repair
P0344 on Jeep by model: symptoms, diagnosis and fix
Late-TJ 4.0L Wranglers are well known for Oil Pump Drive Assembly (OPDA) failures, often described by owners as the 'screaming monkey' chirp or squeal from the engine bay. The OPDA can bind or wear internally, which may damage the camshaft gear and affect oil pump drive timing. If ignored, the issue can escalate from noise and check-engine lights to expensive internal engine repair.
Common Symptoms
- Chirping or squealing from engine bay
- Check engine light
- Rough running
- Intermittent misfire-like behavior
- Metallic wear on OPDA gear
- Engine timing sync faults
How to Fix
Diagnosis involves listening for chirping near the OPDA, checking shaft play, inspecting the drive gear wear pattern, and verifying cam/crank sync if a fault code is present. The usual repair is replacing the OPDA with an updated unit and inspecting the cam gear for abnormal wear before reinstalling. Many owners also lubricate the replacement gear and monitor for recurring noise after installation.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Crown Automotive 53010624AC updated OPDA assemblyOEMCrown 53010624AC
Replace a confirmed noisy, binding or worn OPDA with the revised-lubrication assembly Fitment/availability: 2005-2006 Wrangler TJ/Unlimited 4.0L; inspect the mating cam gear and index the engine before removal.
- Crown Automotive 5149034AA camshaft-position sensorOEMCrown 5149034AA
Replace the OPDA-mounted sensor only when circuit and sensor testing confirms failure Fitment/availability: 2005-2006 Wrangler TJ/Unlimited 4.0L; conditional sensor path.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipDo not ignore a new chirp from the passenger side rear of the 4.0L; catching OPDA wear early can prevent camshaft gear damage.
- TipBefore installing a replacement OPDA, mark engine position carefully and verify synchronization afterward to avoid drivability issues.
Sources for this issue (2)
P0344 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0344 mean on a Jeep?
P0344 stands for "Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or Single Sensor)." P0344 is a generic OBD-II code indicating the engine computer detected an intermittent or erratic signal from the camshaft position sensor 'A' on bank 1 (or the single sensor on inline engines). This sensor reports the camshaft's position so the computer can correctly time fuel injection and ignition. An intermittent signal means the data is dropping out momentarily, which can cause hard starting, stalling, hesitation, or rough running. It often points to a wiring or connection problem rather than an outright sensor failure. On Jeep it is documented across 1 model: Wrangler.
What are the most common causes of P0344?
The most common causes of P0344 are: Loose, corroded, or chafed camshaft sensor wiring/connector, Failing camshaft position sensor, Intermittent open or short in the circuit, Damaged or contaminated reluctor/tone ring, Excessive air gap or debris at the sensor tip, Poor ground or unstable power supply, Worn timing components affecting sensor signal. The specific cause varies by vehicle.
How much does it cost to fix P0344 on a Jeep?
Published repair estimates on Jeep range from $350 to $2,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0344 on a different make?
View P0344 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.