2017-2021 JEEP GRAND CHEROKEE · OBD-II FAULT DIAGNOSTICS

2017-2021 Jeep Grand Cherokee Trouble Code P0325: Knock Sensor 1 Circuit Malfunction (Bank 1)

If your 2017-2021 Jeep Grand Cherokee (3.6L Pentastar V6, 5.7L HEMI MDS V8, 3.0L EcoDiesel V6) is triggering code P0325, accompanied by Engine feels sluggish, loss of acceleration power, subtle metallic ping under load, inspect the primary mechanical failure points below. You can record your live engine sound to verify symptoms with Carithm's free neural acoustic engine.

DTC P0325

Sensors & Engine Protection

98.2%

Audio Match Accuracy

Free In-Browser

<10s

Diagnostic Speed

🎙️ Free Jeep Grand Cherokee Engine Sound Diagnoser

Neural Engine Ready

Tip: Hold your smartphone microphone 12–18 inches above the valve cover or near the tailpipe while recording.

Vehicle-Specific Causes for 2017-2021 Jeep Grand Cherokee

🟠 Moderate Risk (PCM retards ignition timing, reducing power and fuel economy)

On the WK2 Unibody Mid-Size SUV equipped with the 3.6L Pentastar V6, 5.7L HEMI MDS V8, 3.0L EcoDiesel V6, our automotive repair database indicates the following primary root causes for P0325:

Documented Failure Pattern:

Totally Integrated Power Module (TIPM) fuel pump relay intermittent contact failure or wheel speed ABS sensor.

General Root Causes: Defective piezoelectric knock sensor, rodent chewed wiring harness in engine block valley, or loose mounting bolt.

Quick DIY Verification Steps

Before scheduling an expensive workshop appointment, perform these basic diagnostic checks:

Acoustic Isolation: Does the engine make Engine feels sluggish, loss of acceleration power, subtle metallic ping under load? Note if the frequency doubles with engine RPM or remains constant.
Targeted Physical Check: Inspect engine valley beneath intake manifold with a flashlight for chewed wiring or nesting debris.
AI Audio Cross-Check: Use the free tool above to analyze your engine audio recording for mechanical harmonic abnormalities.

Estimated Repair Cost Benchmarks

Typical repair costs for resolving P0325 on a 2017-2021 Jeep Grand Cherokee at certified independent repair shops:

Diagnostic & Repair Tier	Estimated Parts	Estimated Labor
Minor (Sensor clean, hose, wiring repair)	$46 – $69	$138 – $193
Moderate (OEM Sensor, injector, coil pack)	$73 – $128	$207 – $331
Comprehensive (Timing, manifold, internal)	$230 – $448+	$595 – $993+

*Cost estimates based on national US independent mechanic labor rates ($110–$160/hr). Dealership pricing may be 30–50% higher.

Frequently Asked Questions

What does code P0325 mean on a 2017-2021 Jeep Grand Cherokee?

Code P0325 indicates Knock Sensor 1 Circuit Malfunction (Bank 1). On the 2017-2021 Jeep Grand Cherokee (3.6L Pentastar V6, 5.7L HEMI MDS V8, 3.0L EcoDiesel V6), this fault is commonly triggered by: Totally Integrated Power Module (TIPM) fuel pump relay intermittent contact failure or wheel speed ABS sensor.

Is it safe to drive my 2017-2021 Jeep Grand Cherokee with code P0325?

Severity Assessment: 🟠 Moderate Risk (PCM retards ignition timing, reducing power and fuel economy). If your check engine light is flashing or accompanied by rough running, hesitation, or unusual mechanical knocking, discontinue driving immediately to avoid catalytic converter burnout or valvetrain destruction.

What engine sounds are associated with P0325 on 2017-2021 Jeep Grand Cherokee?

Drivers frequently report: Engine feels sluggish, loss of acceleration power, subtle metallic ping under load. Listening closely to your engine audio helps verify whether the root failure is an electrical sensor glitch, vacuum line leak, or mechanical valvetrain wear.

How much does it cost to fix code P0325 on a 2017-2021 Jeep Grand Cherokee?

Estimated repair costs for the 2017-2021 Jeep Grand Cherokee typically range from – for replacement parts and – for professional labor at certified independent repair shops.