P2136 code meaning
Throttle/Pedal Position Sensor/Switch A/C Voltage Correlation
Powertrain system Generic code P21xx codes Check engine light
What P2136 means
P2136 reports that position signals A and C disagree. On engines with two electronic throttles, C typically belongs to the second throttle body: GM's 2023 table 23OBDG07 assigns C to sensor 1 of the bank 2 throttle. Mercedes-Benz documents P2136 for its M177 twin-turbo V8 in AMG C63, GLC63, SL63 and related models: bulletin LI07.10-P-080384 lists it with P2135, the A/G and B/G checks and actuator faults, traces the set to increased electrical resistance in the connector pins of both throttle actuators, and replaces the connector sockets with coated terminals. FCA also lists the code in emissions recall T21 for the 2004-2006 Dodge Sprinter. Expect a warning lamp and possibly reduced power.
P2136 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 P2136
- Engine warning lamp on
- Possible loss of power
- Often stored together with P2135
Common causes of P2136
- Most likelyIncreased resistance in the throttle actuator connector pins
- PossiblePosition sensor in one throttle body drifted or worn
- Less likelyCarbon or ice making one throttle lag behind the other
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 P2136 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. |
| 36 | The exact fault in that area. |
What to do next
- Note P2136 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 P2136
What does P2136 mean?
P2136 means "Throttle/Pedal Position Sensor/Switch A/C Voltage Correlation". P2136 reports that position signals A and C disagree. It is a generic code, so it means the same on every make.
Is it safe to drive with P2136?
Drive gently and only to a workshop. With P2136 the car can go into limp mode (reduced power) to protect itself.
Will P2136 fail an emissions test?
Yes, it can. P2136 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 P2136 to fix?
Difficulty: medium. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P2136 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.