Rose of Cairo

In my 1998 Honda Civic, I had the the Malfunction Indicator Lamp come on. I took it to an Autozone store to get the computer code. The computer code came as:

P0700: Automatic Transmission Fault. Indicate Trans Fault Check other codes

Then this came up twice;

P0706: The PCM has determined that the voltage signal from the transmission range sensor is out of range for the current engine operating condition.

What does this mean - what is wrong? How can I get it fixed?

Thanks

Vindicator9000

Have you noticed the D4 light on or blinking? According to the manual, the P0700 code is supposed to cause the D4 light to function as a diagnostic to help tell you what the transmission problem is - assuming it doesn't already have an obvious problem. This code appears to me to indicate that the signal isn't making it from the transmission to the guage cluster to tell it what gear you're in.

Before you do anything, I'd check the grounds on the transmission. It should be a thick wire that runs between the transmission and the body on the passenger side. This sounds like a wiring short rather than an actual transmission problem, and it's fairly common for grounds to get corroded over time.

If the D4 is on constantly:
This indicates either a short between pin 25 on the B connector to the ECU, a short between pin 25 and the ground, a problem with the ECU, or the A/T gear position switch. Having never worked on an automatic, I have no idea what the gear position switch is or where it's at.

If the D4 does not come on:
Check terminals A9 and A22 for continuity with the body ground. Check for voltage between A9 and A11, and A22 and A24. Check that you have voltage between B13 and A9 or A22 for 2 seconds after turning ignition on - that's your D4 light.

Lastly, if none of this makes sense to you, I recommend taking it to a shop.

Rose of Cairo

Vindicator9000, I appreciate the detailed answer.