P2135 on CHEVROLET EQUINOX — Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

Q: "What does P2135 mean on a CHEVROLET EQUINOX?"

"P2135 indicates: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This is a powertrain code. 7 CHEVROLET EQUINOX owners have reported this to NHTSA."

Q: "What are the most common causes of P2135 on CHEVROLET EQUINOX?"

"Based on 7 NHTSA reports, the most commonly cited components are: Vehicle Speed Control,Electronic Stability Control (Esc),Engine, Power Train,Vehicle Speed Control,Engine, Unknown Or Other. These percentages are based on the component field in owner complaints."

Q: "Is P2135 serious on my CHEVROLET EQUINOX?"

"Of 7 NHTSA reports for this code on CHEVROLET EQUINOX, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHEVROLET EQUINOX shows P2135?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P2135 Means on Your CHEVROLET EQUINOX

P2135 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

7 CHEVROLET EQUINOX owners have reported this issue to NHTSA across model years 2007-2011. Most reports come from the 2010, 2011 model years.

Real CHEVROLET EQUINOX Owner Reports

Source: NHTSA Complaints Database

"On 1/28/13 i replaced the throttle body at gm certified dealer. truck was diagnosed with code p2135 for failed throttle body and connector. while driving my 2007 chevy equinox it displayed service traction control, service stabiltrak, engine power reducing and check engine light."

— 2007 CHEVROLET EQUINOX owner · VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 01/28/2013

"The automotive trouble code p2135 throttle/pedal position sensor/switch a/b voltage correlation refers to a problem related to the throttle's ability to open and close properly. ... a throttle position sensor (tps) is situated opposite the throttle linkage connection on the throttle plate."

— 2010 CHEVROLET EQUINOX owner · UNKNOWN OR OTHER · Filed 02/28/2020

"Vehicle was in motion approximately 45 mph when check engine light came on, message then appeared that engine power is reduced and speed immediately dropped to around 15 mph and then to a rough idle at approx 5-10mph. was almost rear ended by vehicle traveling behind me."

— 2010 CHEVROLET EQUINOX owner · VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 01/15/2020

"Car completely lost power on the highway while engine running. engine went to idle. nearly hit by other cars traveling on the highway. had the car towed to my local mechanic. car was throwing code p2135 which is throttle position sensor."

— 2010 CHEVROLET EQUINOX owner · VEHICLE SPEED CONTROL · Filed 11/15/2016

"While driving 55mph, the check engine light appeared on the display. shortly after, a message reading "service stabili trak" appeared. then, another message appeared "engine power reduced". my car started shaking fiercely and i could not go above 30mph."

— 2010 CHEVROLET EQUINOX owner · ELECTRONIC STABILITY CONTROL (ESC) · Filed 01/02/2015

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'07

4

'10

2

'11

Common Causes on CHEVROLET EQUINOX

Based on NHTSA complaint component analysis for this vehicle.

VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 28.6%

POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE 28.6%

UNKNOWN or OTHER 14.3%

VEHICLE SPEED CONTROL 14.3%

ELECTRONIC STABILITY CONTROL (ESC) 14.3%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P2135 mean on a CHEVROLET EQUINOX? ▾

P2135 indicates: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This is a powertrain code. 7 CHEVROLET EQUINOX owners have reported this to NHTSA.

What are the most common causes of P2135 on CHEVROLET EQUINOX? ▾

Based on 7 NHTSA reports, the most commonly cited components are: Vehicle Speed Control,Electronic Stability Control (Esc),Engine, Power Train,Vehicle Speed Control,Engine, Unknown Or Other. These percentages are based on the component field in owner complaints.

Is P2135 serious on my CHEVROLET EQUINOX? ▾

Of 7 NHTSA reports for this code on CHEVROLET EQUINOX, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHEVROLET EQUINOX shows P2135? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.