Question about 1992 Chevrolet K1500

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Engine code 43 lights up engine has spark knock repaced esc module knock sensor tuned it up it runs rich and has the spark knock isssue

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  • Chevrolet Master
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Code 43 throttle position sensor out of adjustment.not working.if you replace knock sensor and it still spark knocking.make sure the wire connector is not broken.go to higher octane gas .make sure engine timing is correct. also make egr valve is opening when it suppose to it will cause detonation.you will need a scanner to check tps and egr valve.

Posted on Jun 17, 2009

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88 olds cutlass 2.8 liter code 43 engine runs poorly


Code 43 means rich I think, so could be Coolant temp sensor, O2 sensor, leaky injector(s), tune-up items, other.

Aug 14, 2016 | Cars & Trucks

1 Answer

91 3.1 car starts and runs fora minute then dies code 43 came up( fixed wire kn Sen.) now 21and 43 came up?


You didn't say what the make and model are, but if code 43 is a knock sensor issue I guess its a GM product.
Code 21 means the TPS voltage was too high, and code 43 means the knock sensor voltage was too high or too low.
Neither code would kill the engine. Just turn the warning light on.
If the throttle position sensor failed, you would get the effect of stalling on acceleration.
You may need to narrow down the possible causes to spark or fuel, and in the end it could be the engine computer. It could also be a relay or other electrical component.

Apr 08, 2016 | Cars & Trucks

1 Answer

Cant Find a list of codes 1989 Buick Century. Car stalls and has a rough idle. coads are 31 43 and 44


Here is a code list for you. Remember this doesn't always mena a sensor issue, the problem can be in the wiring as well, or in the case of a lean code you may have an actual lean condition due to a vacuum leak at the intake or vacuum hoses or connections. I have highlighted your fault codes and added extra notes.
GM common codes for OBD1 (for vehicles made before 1995)
12 System normal
13 oxygen sensor circuit open
14 coolant sensor high resistance or shorted
15 coolant sensor circuit low or open
16 direct ignition system (DIS) fault in circuit
17 cam position sensor fault
18 crank or cam sensor error
19 crank sensor circuit fault
21 tps sensor out of range
22 tps sensor signal voltage low
23 intake air temp sensor out of range, low
24 vehicle speed (vss) sensor circuit fault
25 air temp sensor sensor out of range, high
26 quad-driver module (computer) circuit #1 fault
27 quad-driver module (computer) 2nd gear circuit
28 quad-driver module (computer) circuit #2 fault
29 quad driver module (computer) 4th gear circuit
31 camshaft position sensor fault
32 egr circuit fault
33 map sensor signal out of range, high
34 map sensor signal out of range, low
35 idle air control sensor circuit fault
36 ignition system circuit error
38 brake input circuit fault
39 clutch input circuit fault
41 cam sensor circuit fault, igntion control circuit fault
42 electronic spark timing (EST) circuit grounded
43 knock sensor malfunction or electronic spark control (ESC) circuit fault (ignore this for now)
44 oxygen sensor lean exhaust (make sure you no engine vacuum leaks)

45 oxygen sensor rich exhaust
46 pass-key II circuit or ps.pressure switch circuit fault
47 pcm-bcm data circuit
48 misfire diagnosis
51 calibration error, mem-cal, ecm or eeprom failure
52 engine oil temperature circuit, low temperature indicated
53 battery voltage error or egr or pass-key II circuit
54 egr system failure or fuel pump circuit low voltage
55 a/d converter error or pcm not grounded or lean fuel or frounded reference voltage
56 quad-driver module #2 circuit
57 boost control problem
58 vehicle anti-theft system fuel enable circuit
61 a/c system performance or degraded oxygen sensor signal
62 engine oil temperature high temperature indicated
63 oxygen sensor right side circuit open or map sensor out of range
64 oxygen sensor right side lean exhaust indicated
65 oxygen sensor right side rich exhaust indicated
66 a/c pressure sensor circuit low pressure
67 a/c pressure sensor circuit or a/c clutch circuit failure
68 a/c compressor relay circuit failure
69 a/c clutch circuit head pressure high
70 a/c refrigerant pressure circuit high
71 a/c evaporator temperature sensor circuit low
72 gear selector switch circuit
73 a/c evaporator temperature circuit high
75 digital egr #1 solenoid error
76 digital egr #2 solenoid error
77 digital egr #3 solenoid error
79 vehicle speed sensor (vss) circuit signal high
80 vehicle speed sensor (vss) circuit signal low
81 brake input circuit fault
82 ignition control (IC) 3X signal error
85 prom error
86 analog/digital ecm error
87 eeprom error
99 power management

Jul 21, 2011 | 1989 Buick Century

2 Answers

Were is the esc module on a 93 s10 blazer 4.3 vortec located


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Nov 22, 2010 | Chevrolet S 10 Cars & Trucks

1 Answer

A friend of mine hooked up a computer to My 1992 gmc sierra pickup and got error codes 44 and 43. But is not sure what they are. Please help


43= electronic spark control- ESC module is not receiving a knck signal from knock sensor.
44=Lean exhaust. check wiring and connectors from oxygen sensor to the ECM.

Aug 14, 2010 | GMC C1500 Cars & Trucks

1 Answer

1997 breeze is shooting codes 12 46 43 55


OBD Code 12 - No Distributor Reference Pulse (Diagnostic Test Active) The Engine Control Module-ECM uses the distributor reference pulse to calculate the engine speed. On newer engines, the Crank Shaft Position Sensor performs this function.

Symptoms:
  • When flashing the Check Engine Light to read codes, code 12 will always display first, indicating the diagnostic system is active
  • The engine will not run with a "hard" code 12 set
Common Problems:
  • Chances are you will never need to diagnose a code 12. Rather, the problem would be a crank, no-start condition.
  • If code 12 does not flash, that would indicate a communication problem with the ECM.
  • Code 12 does not show when reading codes with a scan tool. If there is a communication problem, the scan tool will let you know.



OBD Code 46 - Pass-Key II System Error - Circuit out of Frequency Range The ECM receives a signal from the Pass-Key module. When the correct signal is received, the ECM will allow the engine to start and run. Please review the RepairPal article on the GM Pass-Key Anti-theft systems for more information.

Symptoms:
  • Engine may not start
Common Problems:
  • Faulty ignition lock cylinder



OBD Code 43 - Knock Sensor error The ECM receives a signal from the Knock Sensor based on the amount of engine ping detected. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.

Symptoms:
  • Engine ping
  • Lack of power
Common Problems:
  • Faulty Knock sensor
  • Poor connection at Knock sensor


OBD Code 55 - End Test.


Hope ehit help (remember comment and rated this).

Jul 22, 2010 | 1997 Plymouth Breeze

1 Answer

1995 Chevrolet K1500 Z71 350 4x4. I have a check engine code 43 and have replaced: fuel filter, fuel pump and screen inside the tank, egr valve, plugs, wires, distributor cap+rotor, pick up coil that's...


As much money as you have spent, you could have fixed it and had a lot of beer money left. First thing to check is the KNOCK SENSOR. should be located near the starter.

Jun 04, 2010 | 1995 Chevrolet K1500

1 Answer

1992 caprice problems


CHECK CABLES FROM COMPUTER HARNES TO MOTOR DOESN'T TOUCH EXHAUST MANIFOLD
CHECK GROUND CONTACT BETWEEN MODULE INSIDE DISTRIBUITOR AND NEGATIVE OF BATTERY

Apr 28, 2009 | 1994 Chevrolet Caprice Classic

1 Answer

I HAVE A 1989 SILVERADO WITH THE CHECK ENGINE LIGHT ON. I HAVE THE SELFT TEST ON AND I GOT CODE 32 AND 43. I NEED TO KNOW WHAT THEY STAND FOR. THANKS A MILLION FERNANDO SOTO711@CHARTER.NET


32 EGR open command did not change MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal.
43 The ECM did not detect a knock signal during near wide open throttle operation with coolant temperature above 194� F or the knock signal was present for 5 seconds or more during normal engine operation.
Electronic Spark Control (ESC) Circuit .

Jul 28, 2008 | 1989 Chevrolet C/K 3500

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