Error Codes 42 and 43

Getphazed · 04-03-2007, 04:43 AM

Im recieving these error codes can anyone shed some light on whats causin this?

dcrusupra · 04-03-2007, 05:24 AM

Code 42 - Vehicle Speed Sensor Signal

Diagnosis - No "SPD" signal to ECU for 8 seconds when engine speed is between 2,500 RPM and 4,500 RPM (7M-GE) or 4,000 RPM (7M-GTE) and coolant temp. is below 80* C (176* F) and neutral start switch is off.

Trouble Area - Vehicle speed sensor circuit, vehicle speed sensor, or ECU

Code 43 - Starter Signal

Diagnosis - No "STA" signal to ECU until engine speed reaches 800 RPM with vehicle not moving.

Trouble Area - Ignition switch circuit, ignition switch, or ECU

Getphazed · 04-03-2007, 05:34 AM

Ya i got all that but what do they mean? Im drivin a 91 turbo w/5sp now i dont have speedometor cable hooked up cause needs to be fixed which i figured is 42 but not sure and i have no idea what 43 means by the description.

carfanatic89 · 09-14-2008, 09:57 PM

Can anybody tell me where the vehicle speed sensor and/or show me a pic of where it is.

Chambers · 09-14-2008, 10:16 PM

If its the one I'm thinking of then its on the back of the instrument panel, the TSRM should have something on it in the cruise control section.

Good luck.

carfanatic89 · 09-14-2008, 10:27 PM

I looked but no luck theres not a good picture of where it is. My ecu threw a code 42. and My speedometer quit working. Where does a ecu get a signal of how fast the vehicle is going. I dont have ABS, whats the purpose of this sensor.

Chambers · 09-14-2008, 10:32 PM

Well if your speedo cable is broke then it wont spin the speedometer and then it wouldn't send the signal to the speed sensor, I could see how that could fool the ECU in thinking the sensor was bad.

I think the sensor is mainly for the cruise control. It should be labeld on the back of the instument panel.

Good luck.

04-03-2007, 04:43 AM	#1
Getphazed Stock Join Date: Oct 2005 Posts: 16	Error Codes 42 and 43 Im recieving these error codes can anyone shed some light on whats causin this?

04-03-2007, 05:24 AM	#2
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Code 42 - Vehicle Speed Sensor Signal Diagnosis - No "SPD" signal to ECU for 8 seconds when engine speed is between 2,500 RPM and 4,500 RPM (7M-GE) or 4,000 RPM (7M-GTE) and coolant temp. is below 80* C (176* F) and neutral start switch is off. Trouble Area - Vehicle speed sensor circuit, vehicle speed sensor, or ECU Code 43 - Starter Signal Diagnosis - No "STA" signal to ECU until engine speed reaches 800 RPM with vehicle not moving. Trouble Area - Ignition switch circuit, ignition switch, or ECU __________________ New Rebuild My CarDomain

09-14-2008, 09:57 PM	#4
carfanatic89 3" Exhaust Join Date: Apr 2007 Location: Waco Posts: 164	Can anybody tell me where the vehicle speed sensor and/or show me a pic of where it is. __________________ Supra Engine Powered Dragster

09-14-2008, 10:16 PM	#5
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	If its the one I'm thinking of then its on the back of the instrument panel, the TSRM should have something on it in the cruise control section. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

09-14-2008, 10:27 PM	#6
carfanatic89 3" Exhaust Join Date: Apr 2007 Location: Waco Posts: 164	I looked but no luck theres not a good picture of where it is. My ecu threw a code 42. and My speedometer quit working. Where does a ecu get a signal of how fast the vehicle is going. I dont have ABS, whats the purpose of this sensor. __________________ Supra Engine Powered Dragster

04-03-2007, 05:34 AM	#3
Getphazed Stock Join Date: Oct 2005 Posts: 16	Ya i got all that but what do they mean? Im drivin a 91 turbo w/5sp now i dont have speedometor cable hooked up cause needs to be fixed which i figured is 42 but not sure and i have no idea what 43 means by the description.

09-14-2008, 10:32 PM	#7
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Well if your speedo cable is broke then it wont spin the speedometer and then it wouldn't send the signal to the speed sensor, I could see how that could fool the ECU in thinking the sensor was bad. I think the sensor is mainly for the cruise control. It should be labeld on the back of the instument panel. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"