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P2135CriticalEngine

P2135: Throttle/Pedal Position Sensor Voltage Correlation

11 vehicles · 5 makes · $30-$900 repair

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P2135 is an OBD-II diagnostic trouble code meaning “Throttle/Pedal Position Sensor Voltage Correlation.” The two throttle position sensor signals don't agree. Safety-critical code that will trigger limp mode. This code appears across 11 vehicle models from 5 manufacturers, with repair costs ranging from $30 to $900.

On This Page

  • Common Causes
  • Repair Cost
  • Vehicles (11)
  • Related Codes
  • FAQ

Makes

  • Chevrolet1
  • Chrysler1
  • Ford2
  • Jaguar3
  • Volvo4
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Common Causes

1Faulty throttle body (built-in dual TPS)
2Accelerator pedal position sensor fault
3Wiring issue
4Corroded connector
5ECU fault

Typical Repair Cost

$30 - $900

Based on 11 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.

Diagnostic Tools

To diagnose P2135, you'll need an OBD-II scanner. Here are our recommendations at every price point.

Budget Pick$10–$20

ANCEL AD310 Classic OBD-II Scanner

by ANCEL

A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).

  • Read & clear engine codes
  • View freeze frame data
  • I/M readiness status
  • No batteries or app needed
Check Price on Amazon
Best Value$90–$120

BlueDriver Pro Bluetooth Scanner

by BlueDriver

Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.

  • Enhanced diagnostics (ABS, SRS, transmission)
  • Repair Reports with verified fixes
  • Smog check readiness
  • Free app (iOS & Android)
Check Price on Amazon
Advanced$180–$230

LAUNCH CRP123X OBD-II Scanner

by LAUNCH

A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.

  • Engine, transmission, ABS, SRS diagnostics
  • Live data stream & graphing
  • AutoVIN for vehicle identification
  • Free lifetime updates via Wi-Fi
Check Price on Amazon
Professional$350–$450

Autel MaxiCOM MK808S Diagnostic Tool

by Autel

Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.

  • All-system diagnostics (25+ modules)
  • Bi-directional control & active tests
  • Oil reset, EPB, BMS, TPMS, injector coding
  • 7-inch touchscreen with Android OS
Check Price on Amazon

As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.

Vehicles Affected (11)

AvalancheModerate

Reduced Engine Power Mode from Throttle Body and Pedal Sensor Faults

2007-2013$100-$500310 reports
200Moderate

Engine Stalling at Idle (Electronic Throttle Body)

2011-2017$30-$4000 reports
TransitCritical

3.7L Ti-VCT Throttle Body Failure / Electronic Throttle Control (ETC) Limp Mode

2015-2019$350-$900120 reports
ExplorerCritical

Throttle Body Failure on 4.6L V8 Causing Wrench Light, Limp Mode, and Sudden Loss of Power

2006-2010$350-$9000 reports
S-TYPEModerate

Electronic Throttle Body Failure on V6 Models

2000-2008$150-$600860 reports
XJModerate

Electronic Throttle Body Failure

2004-2009$200-$900820 reports
XKModerate

Throttle Body Position Sensor Failure

2007-2015$300-$800390 reports
V40Critical

Electronic Throttle Module (ETM) Failure

2000-2004$300-$8000 reports
C70Critical

Electronic Throttle Module (ETM) Failure

1999-2005$300-$8000 reports
S70Critical

Electronic Throttle Module (ETM) Failure

1999-2000$300-$8000 reports
V70Critical

Electronic Throttle Module (ETM) Failure

1999-2002$300-$8000 reports

Related Codes (8)

P2138Throttle/Pedal Position Sensor D/E Voltage Correlation002FManufacturer-Specific Diagnostic Code16566Mass Air Flow Sensor Signal Too Low (VAG)ECM-940AEngine Control Module Fault (Volvo)P0008Engine Position System Performance - Bank 1P0009Engine Position System Performance - Bank 2P0010Intake Camshaft Position Actuator Circuit (Bank 1)P0011Intake Camshaft Position Timing - Over-Advanced (Bank 1)

FAQ

What does P2135 mean?

P2135 stands for "Throttle/Pedal Position Sensor Voltage Correlation." The two throttle position sensor signals don't agree. Safety-critical code that will trigger limp mode.

What are the most common causes of P2135?

The most common causes of P2135 are: Faulty throttle body (built-in dual TPS), Accelerator pedal position sensor fault, Wiring issue, Corroded connector, ECU fault. The specific cause varies by vehicle.

How much does it cost to fix P2135?

Repair costs for P2135 range from $30 to $900, depending on the vehicle and root cause.

Which vehicles are affected by P2135?

Au7o has documented P2135 across 11 vehicle models from 5 manufacturers: Chevrolet, Chrysler, Ford, Jaguar, Volvo.

Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.

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