P2137Throttle/Pedal Position Sensor/Switch B/C Voltage Correlation
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2137 compares position signals B and C and sets when their voltages drift apart beyond the calibrated tolerance. No manufacturer publishes a detection rule for this pair; FCA merely lists P2137 in emissions recall T21 for the 2004-2006 Dodge Sprinter among the codes that may surface after the ECU is reprogrammed. Where the letters are known, B is the second track of the main throttle and C a sensor on a second throttle body (GM 23OBDG07). The neighbouring pair A/C is documented by Mercedes on the M177 V8, where corroded or high-resistance actuator pins set it, which is the most likely pattern here too. Unlike P2135, which stays within one throttle, this check spans two components. Expect a warning lamp and possibly reduced power.
- What you may notice
- Engine warning lamp on
- Possible loss of power
- Likely causes
- LikelyHigh resistance or corrosion at a throttle connector
- PossibleTrack B or sensor C drifted or worn
- RareFault on a shared 5 V reference or ground
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.