P0638 OBD Engine Code Logo   Code #P0638 -
Throttle Actuator Control Range/Performance (Bank 1)

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Possible problems triggering this P0638 code include failures in the: Drive by wire control system or failures in the Throttle actuator or possibly the Throttle valve. As always check the Powertrain Control Module (PCM) for possible problems or shorts.

erratic idling @800 rpm

crankshaft/speed sensor. symptoms are starts for 5 mins then dies and wont start then I clear the faults and runs for another 5 mins then dies. tried new crankshaft sensor. New fault p0638 which is throttle and not tried to fix

No start

ligth "check" is on but engine not fail

Saab 9-3

2004 Cadillac SRX w 320hp., AWD. Over several weeks the car began to act like a miss. Finally cut out and limped home. Now will run for 5 sec. then shudder and stall. Put ODT II on and got error code P0638 Throttle Actuator, Range Performance Bank 1. Unless told otherwise, I will replace actuator contro.

Saab 9-3
P0638 Car has reduced performance and is in Limp Home mode. Starts normally and runs fine for a week. Starts and dies 5 times. Starts and runs fine later. Suspect a loose wire/connection.


loss of power slow to build up speed



causes of p0638



sound like it's missing


Mercedes-Benz Sprinter 2500


the obd2 codes p1160 - p1161

Peugeot 203
Engine obd codes p1160 - p1161


Hyundai Elantra

loss of engine performance

Volvo S40
loss of engine performance dtc p0638


car stops when i accelarate

no symptoms, just a code

no symptons just a light

Saab 9-3

car goes into limp when warm, square orange light with zigzag in the centre of ot comes on, we have checked turbo hoses and new dpf filter fitted as that light was on also


Check engine light on run rich

Volvo S60


engine light on off

Mercedes-Benz Sprinter 3500
reduced power 2007 auromatic

Cadillac SRX
I got message to service Stability Control system. TC light and abs light came on and stayed on until I restarted the car. After a mile or two the message again. The car ran ok but next day nothing happened. When I first got the car the tc light came on and the car would not accelerate. Had to tow to a garage. This happened two more times 3 months later. The car has 127,000 miles. V8

Mazda Mazda5
Reduce power



P0168 code


Throttle wide open

Kia Sedona
My car reduced power




I got a 2002 mini cooper s I accelarate eml / srevice light come ! I replaced the coil but no differance and the p0683 comes up how can I fix this problem? ?

Car cuts out at low revs and when stopping at junctions.... but will restsrt immediately

Cadillac SRX

2010 sprinter code 0208

Ford Fiesta
lampje brand

p0638,no revs,tried cleaning tp connector ,d04 connector ,Ecu connector,and tried pedal from another car although this part was not tested,just borrowed from local scrap yard,fiat stilo 1.6,thanks

Fiat Brava
p0638,no revs,tried cleaning tp connector ,d04 connector ,Ecu connector,and tried pedal from another car although this part was not tested,just borrowed from local scrap yard,fiat stilo 1.6,thanks

Vehicle would end up in "limp mode" but stalls. Reset allows vehicle to function properly.

Cadillac SRX
Vehicle would end up in "limp mode" but stalls. Reset allows vehicle to function properly. Was getting p0300 but finally pulled p0638 as first code.

Hyundai Entourage


2006 hyundai tiburon gt P0325, P0171, P0174



Mazda Mazdaspeed Mazda3
wetsdegsDY fxgdzHD


Aston Martin DB9
P0606 is the code but the car runs normal


engine wiring harness

Mini Cooper S
codes 1125 and p0638 if changed throttle body with no help. It might be need to change the engine wiring harness

Audi A6
j338 defectiune permanenta domeniu performanta


code 0208

Mercedes-Benz Sprinter 2500
code 0208

Mitsubishi Pickup

This website is great a919f9c41d35d5e195f64f5cc87783ea


Jeep Grand Cherokee

Code 0208 comes up but does not seem to be affecting the sprinters performance. It is however keeping the engine light on preventing me from getting it inspected...

p0638 saablinear 2003 engine liht on

Mil came on intermittent

Saab 9-3
engine light on


Bad drive

Alfa Romeo GT


Stalls at idle.

Cadillac SRX
Stalls at idle

Intermittent engine light with code P0638 on jazza going in limp mode randam

engine lost power

Opel Astra
2 FOUTCODES p1125 en p0638 motor loopt in noodloop 3000rpm egr is veranderd


van will not start seam to fire once then just turns over

Suzuki Grand Vitara
codigo p0638.falta de potencia

Cadillac SRX
car was idling then shook and reduced power came on with check engine light. switched car off and restarted, everything was fine for 4 minutes then same again and a third time.

no acceleration on a 2004 cadi srx 3.6L

car runs rough, I got fault code po638


Opel Astra

P0638 fault code. Replaced throttle body twice & light comes on with same fault code

This website is great dcf3853fb629de8d2338221dcf3ce394

p 0638

Mazda 6
rough and surging idle. tried shutting off and restarting and same issue. drove home 9 mi in reduced performance mode (30mph max on flats, slower on uphills). tried to troubleshoot but started fine and ran fine. code was stored but not currently flagging. going to wait until it happens again and try to scan when it happens. not a vacuum leak, i checked everywhere for one and there isn't one. pulling codes confirmed the lack of vacuum leak codes.

Mill light coming on drive ok

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Tell us about Code #P0638

When did your Check Engine Light Come On?
Does your Car Start?
Does your Car Vibrate? Shake?
Does your Car Idle Roughly? Reduced Power?

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Other Comments

P0103 black smoke,,wont accelerate,,alao codes po136,p1451,po172

P0106 indicate light for engine check

P0748 po748 code

P0057 I got this Poo57 code on my car

P0172 No trying to get some answers on how to correct the issue

Other Check Engine Light Codes

P0033   Turbo Charger Bypass Valve Control Circuit
P0112   Intake Air Temperature Circuit Low Input
P0252   Injection Pump Fuel Metering Control 'A' Range/Performance (Cam/Rotor/Injector)
P0255   Injection Pump Fuel Metering Control 'A' Intermittent (Cam/Rotor/Injector)
P0474   Exhaust Pressure Sensor Intermittent
P0524   Engine Oil Pressure Too Low
P0713   Transmission Fluid Temperature Sensor Circuit High Input
P0877   Transmission Fluid Pressure Sensor/Switch "D" circuit Low
P0897   Transmission Fluid Deteriorated
P0979   Shift Solenoid "C" Control Circuit Low

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