Check engine light
Thread Starter
Cruising
Joined: Jun 2009
Posts: 10
Likes: 0
From: Austin TX
Check engine light
I asked this a couple of weeks ago and got some great info. Wish I could find the old thread but I can’t.
I bought an 02 6 speed convertible a couple of months ago. The check engine light started coming on and I had it turned off a couple of times by a mechanic before I found out I can do it myself.
Anyway, from the info I’ve gained, it’s apparently the CAGS thing. It’s been coming on more frequently lately and I’ve reset it. It’s a pain in the ***.
Today I reset ALL the codes. But the check engine light is still coming on. This is the code it’s giving me:
10-PCM -1 code
PO803 H C
Since I reset all the codes today this is the only one that comes up. Also today I actually saw the "1-4" light come on - only because I had my reading glasses on. (It sucks getting old)
As you can tell I’m not mechanically inclined. At this point I have no clue what to do. Any help would be appreciated.
I bought an 02 6 speed convertible a couple of months ago. The check engine light started coming on and I had it turned off a couple of times by a mechanic before I found out I can do it myself.
Anyway, from the info I’ve gained, it’s apparently the CAGS thing. It’s been coming on more frequently lately and I’ve reset it. It’s a pain in the ***.
Today I reset ALL the codes. But the check engine light is still coming on. This is the code it’s giving me:
10-PCM -1 code
PO803 H C
Since I reset all the codes today this is the only one that comes up. Also today I actually saw the "1-4" light come on - only because I had my reading glasses on. (It sucks getting old)
As you can tell I’m not mechanically inclined. At this point I have no clue what to do. Any help would be appreciated.
Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
Here's you some good reading:
DTC P0803
Circuit Description
With the ignition ON battery voltage is supplied directly to the skip shift solenoid. The powertrain control module (PCM) controls the solenoid by grounding the control circuit via an internal switch called a driver. The driver supplies the ground for the component being controlled. Each driver has a fault line which the PCM monitors. When the PCM commands a component ON, the voltage of the control circuit should be low (near 0 volts). When the PCM commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage). If the internal fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the DTC to set.
Conditions for Enabling the 1-4 Upshift Solenoid
The vehicle speed is between 24-31 km/h (15-19 mph).
The engine coolant temperature (ECT) is greater than 77°C (171°F).
The BARO is greater than 76 kPa.
The accelerator pedal position (APP) is less than 26 percent.
Once the 1-4 Upshift solenoid is enabled the solenoid will not be re-enabled until the vehicle speed returns to 0 km/h (0 mph) and the conditions for enabling the 1-4 Upshift solenoid are met.
Conditions for Running the DTC
The engine speed is more than 400 RPM.
The ignition voltage is between 6.0 volts and 18.0 volts.
Conditions for Setting the DTC
The PCM detects that the commanded state of the driver and the actual state of the control circuit do not match.
Condition must exist for a minimum of 5 seconds.
Action Taken When the DTC Sets
The PCM stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The PCM records the operating conditions at the time the diagnostic fails and stores this information in the Failure Records.
Conditions for Clearing the DTC
A last test failed, or current DTC clears, when the diagnostic runs and does not fail.
A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
Use the scan tool in order to clear the DTC.
Diagnostic Aids
Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.
For any test that requires probing the PCM or a component harness connector, use the J 35616-A connector test adapter kit. Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters in Wiring Systems.
Low system voltage can cause this DTC to set. When reviewing captured data, verify if a low system voltage condition was present at the time the DTC was stored in memory.
For an intermittent condition, refer to Testing for Intermittent and Poor Connections in Wiring Systems.
DTC P0803
Circuit Description
With the ignition ON battery voltage is supplied directly to the skip shift solenoid. The powertrain control module (PCM) controls the solenoid by grounding the control circuit via an internal switch called a driver. The driver supplies the ground for the component being controlled. Each driver has a fault line which the PCM monitors. When the PCM commands a component ON, the voltage of the control circuit should be low (near 0 volts). When the PCM commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage). If the internal fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the DTC to set.
Conditions for Enabling the 1-4 Upshift Solenoid
The vehicle speed is between 24-31 km/h (15-19 mph).
The engine coolant temperature (ECT) is greater than 77°C (171°F).
The BARO is greater than 76 kPa.
The accelerator pedal position (APP) is less than 26 percent.
Once the 1-4 Upshift solenoid is enabled the solenoid will not be re-enabled until the vehicle speed returns to 0 km/h (0 mph) and the conditions for enabling the 1-4 Upshift solenoid are met.
Conditions for Running the DTC
The engine speed is more than 400 RPM.
The ignition voltage is between 6.0 volts and 18.0 volts.
Conditions for Setting the DTC
The PCM detects that the commanded state of the driver and the actual state of the control circuit do not match.
Condition must exist for a minimum of 5 seconds.
Action Taken When the DTC Sets
The PCM stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The PCM records the operating conditions at the time the diagnostic fails and stores this information in the Failure Records.
Conditions for Clearing the DTC
A last test failed, or current DTC clears, when the diagnostic runs and does not fail.
A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
Use the scan tool in order to clear the DTC.
Diagnostic Aids
Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the PCM.
For any test that requires probing the PCM or a component harness connector, use the J 35616-A connector test adapter kit. Using this kit prevents damage to the harness/component terminals. Refer to Using Connector Test Adapters in Wiring Systems.
Low system voltage can cause this DTC to set. When reviewing captured data, verify if a low system voltage condition was present at the time the DTC was stored in memory.
For an intermittent condition, refer to Testing for Intermittent and Poor Connections in Wiring Systems.
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
If you have a CAGS bypass-when it fails you'll get an 803. I got it w/ my bypass. The cheap 1/4 watt resistor in it fried. Put in a 1 watt back in the bypass and all was well. $1.50 for a pack of 4 @ the "Shack"
Burning Brakes
Joined: Sep 2007
Posts: 860
Likes: 3
The CAGS Eliminator is easy to install, and in your case, easy to replace. It is located on the side of the transmission, which is near the back of the car. Here is a pic of one:
Once you have ordered a replacement what you (or your mechanic) will need to do is raise up the back end enough to get under there and locate the CAGS Eliminator (it will be on the drivers side of the tranny). unplug the existing one and plug in the new one, then lower the car - you're done. It is just that simple.
Once you have ordered a replacement what you (or your mechanic) will need to do is raise up the back end enough to get under there and locate the CAGS Eliminator (it will be on the drivers side of the tranny). unplug the existing one and plug in the new one, then lower the car - you're done. It is just that simple.
