P0299 on Chrysler: How to Diagnose & Fix
Turbo/Supercharger Underboost Condition
1 Chrysler model · 1 documented issue · 1 critical · $800-$1,500 repair
P0299 on Chrysler by model: symptoms, diagnosis and fix
The 2.4L DOHC engine requires timing belt replacement at 60,000-90,000 mile intervals. The non-turbo version is non-interference (belt failure won't destroy engine), but the turbo GT version IS an interference engine where timing belt failure causes catastrophic valve-to-piston contact and engine destruction. Water pump is driven by timing belt and must be replaced simultaneously. Job rates 8/10 difficulty due to extremely tight engine bay.
Common Symptoms
- Ticking or slapping noise from timing cover area
- Engine misfires or runs rough
- Complete loss of power (belt failure)
- Engine cranks but won't start (belt jumped)
How to Fix
Replace timing belt, water pump, tensioner, and idler pulleys as a complete kit. Gates PowerGrip Timing Belt Kit with water pump TCKWP265C (2003-2009) or TCKWP265B (2001-2002). Mopar water pump 4694307AB. Labor is 6-8 hours due to tight engine bay. NEVER skip on turbo models.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Engine Timing Belt Kit with Water PumpCross-refCK265LK2
Fitment confirmed against the ShowMeTheParts catalog for this vehicle's year and engine.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (1)
P0299 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 P0299 mean on a Chrysler?
P0299 stands for "Turbo/Supercharger Underboost Condition." P0299 means the engine computer detected an underboost condition — the turbocharger or supercharger is producing less boost pressure than the PCM expects for the given conditions. The computer compares the manifold/boost pressure sensor reading to a target based on engine load, and when actual boost falls short, it sets this code. The most common real-world cause is a leak somewhere in the intake/charge-air path. You'll typically feel reduced power or sluggish acceleration, and the engine may go into a reduced-power mode. On Chrysler it is documented across 1 model: PT Cruiser.
What are the most common causes of P0299?
The most common causes of P0299 are: Boost/intake leak (cracked or loose charge-air hose or intercooler), Faulty or sticking turbo wastegate or actuator, Stuck or clogged variable-geometry turbo vanes (VGT), Faulty boost pressure or MAP sensor, Leaking or disconnected vacuum/boost control lines, Restricted air intake or clogged air filter, Failed boost control solenoid, Worn or failing turbocharger. The specific cause varies by vehicle.
How much does it cost to fix P0299 on a Chrysler?
Published repair estimates on Chrysler range from $800 to $1,500 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 P0299 on a different make?
View P0299 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.