2003 Chevrolet Tahoe Logo

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Joe Recio Posted on Nov 24, 2013
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Accelarator position sensor

DTC 0120

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Randy Runyon

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  • Expert 73 Answers
  • Posted on Nov 25, 2013
Randy Runyon
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If you have a code P0120 this bad throttle position sensor.

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0helpful
2answers

My 2005 chevy equinox has codes P1791 P0700 P1125 P2138

These codes appear to relate to your throttle poistion sensor(s) - check your throttle cable linkages and in particular the position sensor on the throttle body.
1helpful
1answer

2007 Pontiac G6 hdtp/conv rear inside deck lid doesn't go down enough to be picked up by trunk going down. Side wings are picked up ok.

Did you take it to a qualified repair shop? Do you know what DTC'S - diagnostic trouble code's are ?
DTC B1010 08: System Sensors Data Mismatch signal invalid
DTC B1296 01: Movable Roof Header Unlatched Sensor Circuit short to battery
DTC B1296 06: Movable Roof Header Unlatched Sensor Circuit short to ground or open
DTC B1296 58: Movable Roof Header Unlatched Sensor Circuit incorrect reaction after event
DTC B1296 59: Movable Roof Header Unlatched Sensor Circuit circuit/component protection time out

DTC B1307 58: Movable Roof Latch Signal Circuit incorrect reaction after event
DTC B1307 59: Movable Roof Latch Signal Circuit circuit/component protection time out

DTC B1395
S3 and S4 are part of the Rear Compartment Lid Release switch. The folding top control (FTC) module uses S3 and S4 to determine whether the claws at the rear of the deck lid are latched into the deck lid or unlatched. S3 closes and supplies a 12-volt reference to the signal circuit when the claws are unlatched. S4 closes and supplies a 12-volt reference to the signal circuit when the claws are latched.

DTC B3669 01: Deck Lip Position Sensor Circuit short to battery
DTC B3669 06: Deck Lip Position Sensor Circuit short to ground or open
DTC B3669 58: Deck Lip Position Sensor Circuit incorrect reaction after event
DTC B3669 59: Deck Lip Position Sensor Circuit circuit/component protection time out
DTC B366A 58: Deck Lid Latched Left Front Sensor Circuit incorrect reaction after event
DTC B366A 59: Deck Lid Latched Left Front Sensor Circuit circuit/component time out

Your best bet , take it to a qualified repair shop .
0helpful
1answer

How to change a csmshsft sensor on a 2008 cadillac srx

Before you replace a part you may or may not need . Why ? What code ? Does the vehicle run ? There has been a lot of confusion on these vehicles with variable valve timing , mixing up cam sensors with camshaft actuators
DTC P0008: Engine Position System Performance Bank 1

DTC P0009: Engine Position System Performance Bank 2
The presence of DTCs P0008 and P0009 along with P0016, P0017, P0018, and P0019 indicates a possible condition with the primary timing chain and the alignment between both intermediate sprockets and the crankshaft. Or, the crankshaft reluctor wheel has moved and is no longer referenced to top dead center (TDC).


?€¢
Observe the scan tool CMP Desired, Actual, and Angle Variance parameters before a DTC sets. This may help to isolate whether a condition is specific to one camshaft, one bank, or caused by a condition with the primary crankshaft timing.



DTC Descriptors
DTC P0010: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1

DTC P0013: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1

DTC P0020: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2

DTC P0023: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2

DTC P2088: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1

DTC P2089: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1

DTC P2090: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1

DTC P2091: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1

DTC P2092: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2

DTC P2093: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2

DTC P2094: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2

DTC P2095: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2
DTC P0341: Intake Camshaft Position (CMP) Sensor Performance Bank 1

DTC P0342: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1

DTC P0343: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1

DTC P0346: Intake Camshaft Position (CMP) Sensor Performance Bank 2

DTC P0347: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2

DTC P0348: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2

DTC P0366: Exhaust Camshaft Position (CMP) Sensor Performance Bank 1

DTC P0367: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1

DTC P0368: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1

DTC P0391: Exhaust Camshaft Position (CMP) Sensor Performance Bank 2

DTC P0392: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2

DTC P0393: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2
I'm sorry but when dealing with these problems your best bet is to take your vehicle to a qualified repair shop , I have never see a DIY'ER correct the problem with these , an in the end always end up taking it to the dealer .

0helpful
1answer

I have an 03 Tahoe 4.8 liter I'm getting OBD codes p0120 p0220 p 1516 p2135 please clean the throttle body replace the throttle body with the position sensor my car will not start

code p 0120 refers to mass air flow(MAF) sensor/volume air flow(VAF) sensor---low input===causes wiring short to ground ---MAF/VAF sensor---ECM
code p 0220 refers to throttle position sensor (TP) B /accelerator pedal position (APP) switch B--circuit malfunction===causes --wiring--TP/APP switch---ECM
code p 2135 refers to the same as p 0220 causes and sensors
0helpful
1answer

Lexus gs300 Dtc p120 Checkengine traction off lights are present

throttle position sensor and switch , accelarator pedal position sensor and switch range and performance problem
0helpful
1answer

The running bords on my 2008 Yukon stop working

Circuit/System Description
The assist step control module (ASC) controls the running board actuators to extend or retract the running boards. Each actuator consists of an electric motor and a potentiometer. The module supplies a low reference and 10-volt reference source voltage to the potentiometer. The ASC control module monitors the voltage drop across the potentiometer on the position signal circuit. When the actuator shaft rotates, the voltage on the position signal circuit changes. The ASC control module supplies the actuator motor with a 12-volt control circuit and a ground control circuit. The ASC module controls the direction of the actuator by changing the polarity of the control circuits.
You should take this to a ASE certified repair shop that has the diagnostic tools to check for stored DTC'S in the running board control module . A code reader for check engine light codes will not work for this system !
This system can set numerous DTC'S
?€¢
Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors
DTC B051A 0B: Left Side Assist Step Motor Control Circuit Current Above Threshold

DTC B051A 01: Left Side Assist Step Motor Control Circuit Short to Battery

DTC B051A 02: Left Side Assist Step Motor Control Circuit Short to Ground

DTC B051A 04: Left Side Assist Step Motor Control Circuit Open Circuit

DTC B051B 0B: Right Side Assist Step Motor Control Circuit Current Above Threshold

DTC B051B 01: Right Side Assist Step Motor Control Circuit Short to Battery

DTC B051B 02: Right Side Assist Step Motor Control Circuit Short to Ground

DTC B051B 04: Right Side Assist Step Motor Control Circuit Open Circuit

DTC B051C 01: 10 V Reference Circuit Short to Battery

DTC B051C 02: 10 V Reference Circuit Short to Ground

DTC B051C 2A: Left Side Assist Step Position Sensor Circuit Too Many Pulses

DTC B051C 22: Left Side Assist Step Position Sensor Circuit Low Time < Minimum

DTC B051C 29: Left Side Assist Step Position Sensor Circuit Too Few Pulses

DTC B051C 62: Left Side Assist Step Position Sensor Circuit Actuator Stuck Open

DTC B051C 63: Left Side Assist Step Position Sensor Circuit Actuator Stuck Closed

DTC B051D 2A: Right Side Assist Step Position Sensor Circuit Too Many Pulses

DTC B051D 22: Right Side Assist Step Position Sensor Circuit Low Time < Minimum

DTC B051D 29: Right Side Assist Step Position Sensor Circuit Too Few Pulses

DTC B051D 62: Right Side Assist Step Position Sensor Circuit Actuator Stuck Open

DTC B051D 63: Right Side Assist Step Position Sensor Circuit Actuator Stuck Closed
If you don't know how the system works you could make it worst !
You

0helpful
1answer

All brake lights and traction light Or on the dash and my brake lights will not work 2006 Cadillac CTS

The traction control system is part of ABS control module an if the light is on there is A DTC - diagnostic trouble code stored in the EBCM - electronic brake control module ! The brake pedal position sensor is an input to the EBCM , when you press the brake pedal the EBCM then energizes the BAS relay in the left rear fuse box turning on the brake lamps !
There could be a DTC like
DTC B3903
The electronic brake control module (EBCM) supplies voltage to the BAS relay coil side voltage supply circuit when the stop lamps are active. The coil side control circuit of the BASS relay is permanently grounded at G402.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3903 Stop Lamp Relay Circuit
Or
DTC C0278
The brake pedal position sensor (BPP) is a potentiometer. The electronic brake control module (EBCM) supplies a 5-volt reference circuit and low reference circuit to the BPP sensor. The BPP sensor signal circuit is a direct input to the EBCM. The EBCM determines the BPP based on the voltage from the BPP sensor. The EBCM converts the BPP sensor feed back voltage to a digital signal and puts it on the class 2 communication bus.
DTC C0282 Brake Pedal Position Sensor Circuit Range/Performance
DTC C0283 Brake Pedal Position Sensor Circuit Low
DTC C0284 Brake Pedal Position Sensor Circuit High
DTC C0880 Device Voltage Reference Output 2 Circuit
You may want to take this to the dealer !
0helpful
1answer

Car not taking the gas,code p2122 and p2127

check your aps sensor,accelarator position sensor if its bad and make sure all connector and wire from this sensor to ecu is good,.
0helpful
2answers

2007 chevy tahoe loses power

No messaage of reduced engine power ? Your vehicle has electronic throttle control . Has four position sensors , two are located in the gas pedal ,an two in the throttle body . The PCM uses these sensor to know how much to open the throttle plate ,allowing more air into the engine . How did you read this code an where did you read it's definition at ? This is not a code for your vehicle . Some time cheap code readers get them wrong .
DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit
DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage
DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage
DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit
DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage
DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage
DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
DTC P2101: Throttle Actuator Position Performance
DTC P2119: Throttle Closed Position Performance
DTC P2176: Minimum Throttle Position Not Learned

If one of this position sensors is bad it will throw the PCM into a
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.


017 Accelerator Pedal Position Sensors
Drive by Wire Function and diagnostics by Wells

2helpful
2answers

Reduced engine power, service traction control, service stabilitrak

First of all a scan tool is need for this not a code reader, you need to view scan data after you find what code is stored in the PCM. It could have a problem with the powertrain control module, wiring, or the Accelerator Pedal Position (APP) Sensors. Here are a few codes that could set .
DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit

DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit

DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation
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