What is a 42 code?
What does police code 42 mean? Police code 42 means Aggravated rape.
What is electronic spark timing?
The spark-Optimizer is a closed-loop type electronic control device that continuously corrects the ignition timing; in effect it re-tunes the engine some ten times every second.
What does a electronic Spark Control Module do?
The electronic spark control module (ESC) is one of many components in your ignition system. Working alongside your distributor and ignition control module, the electronic spark control module varies ignition depending on many things like engine load. It signals the distributor to advance or retard timing.
What is code 43 on obd1?
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.
What causes GM code 42?
Ignition Bypass Circuit Error The ECM monitors the Ignition Bypass circuit and will set code 42 to signal an error. The ignition bypass circuit allows the ECM to switch the ignition module from “base” timing to computer-controlled timing advance.
What causes a code 44?
Oxygen Sensor Error (Lean Condition Indicated) The ECM receives a signal from the O2 sensor based on the amount of oxygen in the exhaust. If there is excess oxygen in the exhaust, it is in lean condition and the O2 sensor voltage will be low.
What is code 42 on obd1?
What causes a code 42?
What are the symptoms of a faulty ignition module?
a faulty ignition module can affect ignition timing, resulting in an engine that misfires and runs rough. the engine may also run well at low speed, but won’t accelerate well. 3. stalling: a failing ignition module can occasionally prevent the engine from getting spark, causing it to stall.
What does a knock sensor do?
The knock sensor identifies the high-frequency engine vibrations characteristic of knocking and transmits a signal to the ECU. The aim is to obtain the maximum energy yield by starting ignition as early as possible. Engines with a knock sensor can reduce fuel consumption and increase torque.
What does code 42 mean on a GM car?
Another code that seems to bring about quite a bit of confusion is code 42 found on most G.M. vehicles except some Cadillac’s and other E-body vehicles that use code (E) 23 as a flag for an Electronic spark timing (EST) circuit fault. The EST circuit has been on G.M. vehicles for quite a few years.
What does code 42 mean on a spark plug?
Code 42 will be set. Code 42 sets if there is an open, or a short to ground, in the EST or by-pass circuit. DIAGNOSTIC CHARTS > CODE 42 – ELECTRONIC SPARK TIMING > TEST DESCRIPTION NOTE: Test numbers refer to test numbers on diagnostic chart. 1. Code 42 means the ECM has seen an open, or short to ground, in EST or by-pass circuit.
What does error code 42 mean on a Ford Explorer?
CODE 42 – Electronic Spark Timing or Bypass Fault Trouble Code 42 indicates that there may be a malfunction in the Electronic Spark Timing (EST) system. During cranking, the timing is controlled by the ignition module while the ECM monitors the engine speed.
What does code 42 mean on the est signal line?
DIAGNOSTIC CHARTS > CODE 42 – ELECTRONIC SPARK TIMING > CIRCUIT DESCRIPTION When system is running on ignition module (no voltage on by-pass line), the ignition module grounds the EST signal line.