P2137 code meaning
Throttle/Pedal Position Sensor/Switch B/C Voltage Correlation
Powertrain system Generic code P21xx codes Check engine light
What P2137 means
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.
P2137 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2137
- Engine warning lamp on
- Possible loss of power
Common causes of P2137
- Most likelyHigh resistance or corrosion at a throttle connector
- PossibleTrack B or sensor C drifted or worn
- Less likelyFault on a shared 5 V reference or ground
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Throttle position sensorThrottle body
What each part of P2137 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 37 | The exact fault in that area. |
What to do next
- Note P2137 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2137
What does P2137 mean?
P2137 means "Throttle/Pedal Position Sensor/Switch B/C Voltage Correlation". P2137 compares position signals B and C and sets when their voltages drift apart beyond the calibrated tolerance. It is a generic code, so it means the same on every make.
Is it safe to drive with P2137?
Drive gently and only to a workshop. With P2137 the car can go into limp mode (reduced power) to protect itself.
Will P2137 fail an emissions test?
Yes, it can. P2137 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2137 to fix?
Difficulty: medium. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P2137 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.