P2110 on Jeep: How to Diagnose & Fix
Throttle Actuator Control System - Forced Limited RPM
2 Jeep models · 2 documented issues · $50-$450 repair
P2110 on Jeep by model: symptoms, diagnosis and fix
The electronic-throttle-control warning lamp and reduced-power or limp mode are protective responses, not a diagnosis that the throttle body has failed. Depending on the stored DTC and application, the factory path may lead to a stuck or contaminated throttle plate, throttle motor or position-sensor response, accelerator-pedal sensors, a five-volt supply fault, damaged wiring or terminals, or a PCM issue. The old card's thermostat shopping claim is not part of the cited ETC diagnostic path, and a throttle body should not be ordered from the warning lamp alone.
Common Symptoms
- Electronic throttle control warning lamp
- Reduced engine output, limited RPM, or limp mode
- Poor or absent accelerator response
- One or more throttle, pedal, voltage-supply, or actuator DTCs
How to Fix
Before clearing anything, record every PCM DTC, pending code, freeze-frame value, battery voltage, temperature, and the exact conditions under which reduced power occurred. Diagnose prerequisite five-volt-supply, throttle-position, accelerator-pedal, or other active faults in the order specified by the current factory procedure for that VIN and engine. For a P2111-style fault, inspect the throttle plate for binding or foreign material and run the scan-tool throttle-follower test, then test the motor circuits, connector terminals, and wiring as directed. For a pedal-correlation code such as P2138, follow the accelerator-pedal sensor and circuit procedure instead. Replace and relearn a throttle body only when the applicable test condemns it; do not buy a thermostat as an ETC rule-out part.
Owner tips & cautions
- WarningAn ETC lamp does not prove the throttle body failed. Save the codes and freeze-frame data before clearing them or disconnecting the battery.
- TipAsk the shop to name the exact DTC and the failed factory test step before approving any throttle-body, pedal, wiring, or PCM part.
Sources for this issue (2)
JK Wranglers use a drive-by-wire electronic throttle. A fault in the electronic throttle body, the integrated throttle position sensor (TPS), the accelerator pedal position (APP) sensor, or their wiring/connectors triggers the red lightning-bolt warning, often together with the traction-control light. The PCM drops the engine into limp mode — reduced power, rough/erratic idle, and capped RPM — to protect the engine. Heat-soak and intermittent connector contact at the throttle body are common triggers, so the fault frequently comes and goes. It is one of the most-searched JK driveability complaints.
Common Symptoms
- Red lightning-bolt (electronic throttle control) light on dash
- Traction control light on simultaneously
- Vehicle enters limp mode with reduced power
- Rough or erratic idle, surging or stalling
- RPM capped / poor acceleration
- Symptom comes and goes (often heat-related)
How to Fix
Pull codes; P2refers commonly point to the throttle actuator or pedal sensor circuits. Clean the throttle body and inspect/re-seat the throttle-body and pedal connectors (a loose connector alone can cause it; some owners add pipe insulation to shield the harness from heat). Perform the throttle-body/idle relearn (key-on relearn procedure) after cleaning or replacement. If the actuator or TPS is faulty, replace the electronic throttle body (Mopar 04861661AB, supersedes 04861661AA) and relearn. Replace the accelerator pedal sensor assembly if the pedal-side circuit is at fault.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 4861661AB electronic throttle bodyOEMMopar 4861661AB
Replace a scan-confirmed integrated throttle actuator/TPS failure on the first JK model year Fitment/availability: 2007 Wrangler JK with 3.8L V6 only; not 2008-2011 despite sharing the 3.8L engine and not the 2012-2018 3.6L.
- Genuine Mopar 04593858AB electronic throttle bodyOEMMopar 04593858AB / 4593858AB
Replace a scan-confirmed integrated throttle actuator/TPS failure on the later 3.8L JK branch Fitment/availability: 2008-2011 Wrangler JK/Unlimited with 3.8L V6.
- Crown 5184349AC electronic throttle body with integrated TPSOEMCrown 5184349AC
Replace a scan-confirmed integrated throttle actuator/TPS failure on the Pentastar JK branch Fitment/availability: 2012-2018 Wrangler JK/Unlimited with 3.6L Pentastar V6; 2018 means JK, not JL.
- Genuine Mopar 53032868AD accelerator pedal/APP sensor assemblyOEMMopar 53032868AD
Do not replace for a throttle-body-side, shared 5-volt-reference or harness fault.
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Sources for this issue (2)
P2110 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 P2110 mean on a Jeep?
P2110 stands for "Throttle Actuator Control System - Forced Limited RPM." This code means the engine computer detected a serious problem in the electronic throttle (drive-by-wire) control system and, to protect the vehicle, has forced the engine into a reduced-power 'limp' mode that caps engine RPM. It is usually a reaction to another underlying throttle fault rather than the root cause itself, so other related codes are typically present. Because power is limited and acceleration is restricted, the car may be unsafe to drive in traffic and should be diagnosed promptly. On Jeep it is documented across 2 models: Grand Cherokee, Wrangler.
What are the most common causes of P2110?
The most common causes of P2110 are: Faulty throttle body / throttle actuator motor, Failed accelerator or throttle position sensor, Damaged, corroded, or loose throttle wiring/connectors, Dirty or carboned-up throttle plate, Related throttle-control fault codes (root cause) present, Low system voltage or poor grounds, PCM/ECM fault (rare). The specific cause varies by vehicle.
How much does it cost to fix P2110 on a Jeep?
Published repair estimates on Jeep range from $50 to $450 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 P2110 on a different make?
View P2110 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.