What does this code mean?
In the cited Ford and GM applications, the two throttle-position signals do not agree within the calibrated relationship. This can trigger reduced engine power. It does not mean the throttle is simply dirty, or that every vehicle needs an entire throttle body; signal naming and repair strategy must be checked for the exact application.
Sources and interpretation [1]
A code identifies a detected condition, not a part that must automatically be replaced.
GM 11-06-04-007C includes specified 2008–2011 Silverado engines and lists permitted RPOs. Its repair uses the throttle-position sensor cover and ECM programming rather than automatically replacing the complete throttle body. Model name and code alone are insufficient to select this historical procedure.
Sources and interpretation [2]
Before replacing a part
Save current/history status and compare both position signals with the correct diagnostic procedure. Match engine RPO and bulletin applicability before parts selection. With reduced power or unreliable acceleration, follow the owner's guidance and arrange service rather than attempting a full-throttle test.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2135THROTTLE POSITION SENSOR NO.1 / NOP2135FORCED LIMITED POWERP2135THROTTLE/PEDAL POSITION SENSOR/SWITCH A / B VOLTAGE CORRELATIONP2135TP SENSOR-B1 AND There are no drivability concernsManufacturer communications
47Original wording in English
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms P213500
Complaint Customer reports Check Engine Light with possible loss of power concern. The Following DTC's are present • P210185 - The throttle valve actuator has a malfunction. There is a signal above the permissible limit…
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms P213500
Complaint Customer reports Check Engine Light with possible loss of power concern. The Following DTC's are present • P210185 - The throttle valve actuator has a malfunction. There is a signal above the permissible limit…
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms P213500
Complaint Customer reports Check Engine Light with possible loss of power concern. The Following DTC's are present • P210185 - The throttle valve actuator has a malfunction. There is a signal above the permissible limit…
YAMAHA
Reported code forms P2135
Service Manual Corrections – FI Troubleshooting Process Changed for DTC P2135 The 2021 MT-09 and MT-09 SP Service Manuals have been revised to correct several errors.
YAMAHA
Reported code forms P2135
Service Manual Corrections – FI Troubleshooting Process Changed for DTC P2135 The 2021 Tracer 9 GT Service Manual has been revised to correct several errors.
NISSAN
Reported code forms P2135
MIL ON WITH DTC P0223, P0507 AND/OR P2135 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and one or more of the following DTCs is stored in the ECM: ï‚· P0223 - TP SEN 1/CIRC-B1 ï‚· P0507 - ISC SYSTEM ï‚· P2135 - TP…
Check vehicle applicability
487A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LUCERNE | 2011 |
| Buick | LUCERNE | 2010 |
| Buick | LUCERNE | 2009 |
| Buick | RAINIER | 2006 |
| Buick | RAINIER | 2005 |
| Buick | RAINIER | 2004 |
| Cadillac | ESCALADE | 2012 |
| Cadillac | ESCALADE | 2011 |
| Cadillac | ESCALADE | 2010 |
| Cadillac | ESCALADE | 2009 |
| Cadillac | ESCALADE | 2008 |
| Cadillac | ESCALADE | 2006 |
Sources and interpretation
These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF page(s) 99 ·
- 11-06-04-007C · Reduced engine power, P2135 ↗
General Motors · PDF page(s) 1 ·
Source check date · 2026-10-27
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.