P0221 on Jeep
Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
P0221 on Jeep vehicles indicates throttle/pedal position sensor/switch b circuit range/performance. Au7o has documented this code across 1 Jeep model — most commonly on Wrangler. This code means the second throttle or accelerator pedal position sensor (circuit B) is sending a signal that is out of the expected range or does not track properly with the other sensor. Modern drive-by-wire systems use redundant sensors, and the computer compares them for agreement. When sensor B's voltage is implausible or inconsistent, this code sets. It can cause hesitation, surging, reduced power, or a forced limp mode for safety. Typical repair costs on Jeep range from $50 to $450, depending on the specific model and root cause.
Common Causes of P0221
- •Faulty throttle position sensor (sensor B)
- •Faulty accelerator pedal position sensor
- •Dirty or worn throttle body
- •Wiring or connector problems (corrosion, chafing)
- •Poor ground or reference voltage to the sensor
- •Intermittent open or short in the signal circuit
- •Faulty PCM/ECM (rare)
P0221 on Jeep by Model
Jeep Wrangler(1 issue)
- Electronic Throttle Control Limp Mode — Red Lightning Bolt (Throttle Body / TPS / APP Sensor)2007-2018
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.
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What does P0221 mean on Jeep?▼
P0221 stands for "Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance." This code means the second throttle or accelerator pedal position sensor (circuit B) is sending a signal that is out of the expected range or does not track properly with the other sensor. Modern drive-by-wire systems use redundant sensors, and the computer compares them for agreement. When sensor B's voltage is implausible or inconsistent, this code sets. It can cause hesitation, surging, reduced power, or a forced limp mode for safety. On Jeep specifically, this code is documented across 1 model.
What causes P0221 on Jeep vehicles?▼
Common causes on Jeep: Faulty throttle position sensor (sensor B), Faulty accelerator pedal position sensor, Dirty or worn throttle body, Wiring or connector problems (corrosion, chafing), Poor ground or reference voltage to the sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0221 on a Jeep?▼
Repair costs on Jeep range from $50 to $450, depending on the specific model and root cause.
Which Jeep models have P0221 documented?▼
Au7o has documented P0221 on 1 Jeep model: Wrangler.