P2113

Code

Generic P — Powertrain

Throttle/Pedal Position Sensor B Minimum Stop Performance

Brand: Generic

Type: P — Powertrain

Views: UK: 26 EN: 79 RU: 40

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Page language: EN

Causes

Faulty throttle position sensor (sensor B) or pedal position sensor B
Corroded, loose, damaged, or shorted wiring/connectors for sensor B
Contaminated or sticking throttle plate/throttle body
Faulty throttle actuator or electronic throttle control module
Poor sensor reference/ground or supply voltage (Vref) issues
Intermittent mechanical binding in linkage or pedal assembly

Symptoms

Check Engine Light (MIL) illuminated
Reduced engine power / limp mode
Erratic or high/low idle
Poor throttle response or hesitation
Possible inability to accelerate beyond low RPM

What to check

Read freeze frame and live data with a capable scan tool; record sensor A and B voltages/percent positions at key states (idle, closed throttle, open throttle)
Confirm DTC is current and note any accompanying throttle-related codes
Visually inspect sensor B connector and wiring for damage, corrosion, pin push-out or water intrusion
Check for proper VREF (usually ~5 V) and good ground at the sensor connector
Manually operate the throttle/pedal and watch sensor A vs B for smooth, proportional change and correct correlation
Inspect and clean throttle body and throttle plate if carbon/soot buildup is present

Signal parameters

Typical closed-throttle (minimum stop) sensor voltage: low range (commonly ~0.2–1.0 V depending on vehicle) — consult vehicle spec
Typical wide-open-throttle sensor voltage: high range (commonly ~4.0–4.8 V) — consult vehicle spec
Sensor B should change smoothly with pedal/throttle movement and correlate to sensor A within manufacturer tolerance (often within 0.1–0.5 V or specified %)
VREF (reference supply) should be stable near 5 V; sensor ground should be near 0 V
No rapid spikes, dropouts, or stuck readings in live data

Diagnostic algorithm

Capture live data: record sensor A and B values and vehicle conditions when code set (cold/warm, idle, pedal movement).
Visual inspection: examine harness and connectors at sensor B and ECM for damage, corrosion, or loose pins. Repair as needed.
Back-probe the sensor connector: verify VREF (~5 V), sensor ground (~0 V), and sensor B output at closed throttle, then open throttle. Compare to sensor A.
Wiggle test wiring while watching live data to detect intermittent shorts or opens.
If wiring and power/ground are good but sensor B output is out of range or not responding correctly, replace sensor B and retest.
Clean throttle body and ensure throttle plate moves freely; perform mechanical checks on pedal and linkage if present.
After repairs, clear codes and perform relearn/throttle adaptation procedures per manufacturer. Confirm code does not return under test drive.
If issue persists after replacing sensor and repairing wiring, test/replace throttle actuator or ECM only after confirming all circuits and procedures per service manual.

Likely causes

Open/short or high resistance in sensor B signal or ground circuit
Sensor B output voltage at closed throttle outside expected minimum-stop range
Poor VREF (5V) or ground at sensor B connector
Throttle body carbon buildup preventing closed-throttle position
Sensor B not tracking sensor A (correlation failure)

Fault status

⚠️ Status

Throttle/Pedal Position Sensor B minimum-stop performance fault detected. Check sensor B, wiring, power/ground, and throttle mechanism. MIL on; vehicle may enter reduced power mode.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours