P2130

Code

Generic P — Powertrain

Throttle/Pedal Position Sensor/Switch F Circuit

Brand: Generic

Type: P — Powertrain

Views: UK: 28 EN: 51 RU: 42

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Page language: EN

Causes

Open, shorted or high-resistance wiring in the APP/TPS sensor circuit
Poor or corroded connector or terminal at sensor or ECU
Faulty accelerator pedal position (APP) sensor or throttle position sensor (TPS)
Loss of 5 V reference or sensor ground
Intermittent wiring (chafing, pinched harness, water intrusion)
Throttle body mechanical fault or internal sensor failure

Symptoms

Check Engine Light (MIL) illuminated
Reduced engine power / limp-home mode (limited throttle response)
Erratic or unresponsive accelerator behavior
Engine may stall or hesitate during throttle changes
Possible inability to start in some vehicles

What to check

Read freeze frame and live data for APP and TPS sensor voltages/percentages with scan tool
Visually inspect connectors and wiring from pedal to PCM and throttle body for damage, corrosion or water
Verify 5 V reference and sensor ground present at sensor connector with key ON (backprobe)
Compare sensor A vs B voltages for proper correlation across pedal travel (they should change smoothly and correlate)
Perform wiggle test on wiring/connectors while monitoring live data to find intermittent faults
Check for stored related codes (e.g., other APP/TPS or throttle actuator codes)

Signal parameters

Typical sensor operating range: 0.5–4.5 V (varies by vehicle) for each sensor output
5 V reference from PCM to sensor: ~5.0 V (with key ON)
Sensor ground: near 0.0 V (low resistance to chassis ground)
At rest (closed throttle / no pedal): one sensor may read ~0.5–1.0 V, the other ~0.5–1.5 V depending on design
During pedal travel, both sensor outputs should rise (or one rises while the redundant reference falls) smoothly without jumps
Correlation rule: sensor voltages should track together within manufacturer tolerance (no opposite or wildly different readings)

Diagnostic algorithm

Connect a capable scan tool, record freeze frame and live data for APP and TPS channels. Note sensor voltages/percentages and symptoms.
Check for other related codes. If multiple throttle/actuator codes exist, address them together.
Visually inspect pedal, throttle body, connectors and wiring for damage, corrosion, or pinched sections. Repair any obvious issues.
Backprobe the APP and TPS connectors with key ON (engine OFF). Verify 5 V reference present, sensor ground continuity, and each sensor output voltage within expected range.
Monitor live voltages while slowly pressing pedal from rest to full travel (or manually move throttle plate if safe). Verify smooth, proportional change and proper correlation between redundant sensors.
Perform wiggle test on harness and connectors while observing live data to find intermittent opens or shorts. Check continuity and resistance of suspect circuits to the PCM with ignition OFF.
If voltage is low or missing, trace wiring to find open/short to ground/5 V. Repair damaged wiring or connector pins, then retest.
If wiring and power/ground are good but sensor outputs are out of spec or do not correlate, replace the faulty APP or TPS per manufacturer procedure.
After repair, clear codes and perform road test with live-data monitoring to confirm correct behavior and that code does not return.
If problem persists after sensor and wiring checks/replacement, consider ECU diagnosis or replacement following OEM diagnostics.

Likely causes

Damaged wiring between pedal sensor and PCM (open/short)
Corroded or loose connector at pedal or throttle body
One sensor output drifting or stuck (failed APP or TPS)
Missing or low 5 V reference from PCM
Poor sensor ground connection
Aftermarket modifications or repairs with incorrect wiring

Fault status

⚠️ Status

PCM detected inconsistent or out-of-range signals in the throttle/pedal position sensor circuit. Vehicle may enter reduced-power (limp) mode until the fault is corrected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours